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Tytuł:
General overview of maintenance strategies – concepts and approaches
Autorzy:
Gackowiec, Paulina
Powiązania:
https://bibliotekanauki.pl/articles/2064749.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
maintenance
maintenance strategies
maintenance management
predictive maintenance
Opis:
This paper presents a literature review of maintenance strategies formulation. The purpose of this article is to provide an overview of different published concepts of maintenance strategies, distinguish the most common approaches to this issue and find a general tendency in strategies classification. Furthermore, the review is aimed to point out the importance of unscheduled downtime which might occur during equipment runtime in a production plant. The paper classifies the existing maintenance concepts and emphasizes key assumptions of the analysed strategies. The literature study and carried out analysis could be useful to find appropriate reliability assurance methods. In addition, defined maintenance approaches might help in decision making process in a company. The paper is a comprehensive overview of discussed strategies, which indicates the most frequent maintenance models in the analysed papers.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 126--139
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review, classification and comparative analysis of maintenance management models
Autorzy:
Lopez, Campos, M.
Crespo Marquez, A.
Powiązania:
https://bibliotekanauki.pl/articles/384659.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
maintenance
management
maintenance process
maintenance model
maintenance tools
Opis:
The present article does a chronological tour through some representative maintenance management models, describes them in a general way and classifies them according to their functioning under declarative models and under process oriented models. It distinguishes in addition the innovations proposed by each author and compares the elements appearing on each model with some of the points mentioned by the ISO 9001:2008 standard, as well as other criteria considered suitable to the case. From this analysis are derived the results between which are distinguished some desirable characteristics for a modern and efficient maintenance management model. In addition the application of these models for supporting industrial needs, as well as its future challenges are discussed too.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 3; 110-115
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maintenance 4.0 technologies – new opportunities for sustainability driven maintenance
Autorzy:
Jasiulewicz-Kaczmarek, Małgorzata
Legutko, Stanislaw
Kluk, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/407249.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Maintenance 4.0
smart maintenance
data-driven maintenance
sustainable maintenance
Opis:
Digitalization and sustainability are important topics for manufacturing industries as they are affecting all parts of the production chain. Various initiatives and approaches are set up to help companies adopt the principles of the fourth industrial revolution with respect sustainability. Within these actions the use of modern maintenance approaches such as Maintenance 4.0 is highlighted as one of the prevailing smart & sustainable manufacturing topics. The goal of this paper is to describe the latest trends within the area of maintenance management from the perspective of the challenges of the fourth industrial revolution and the economic, environmental and social challenges of sustainable development. In this work, intelligent and sustainable maintenance was considered in three perspectives. The first perspective is the historical perspective, in relation to which evolution has been presented in the approach to maintenance in accordance with the development of production engineering. The next perspective is the development perspective, which presents historical perspectives on maintenance data and data-driven maintenance technology. The third perspective, presents maintenance in the context of the dimensions of sustainable development and potential opportunities for including data-driven maintenance technology in the implementation of the economic, environmental and social challenges of sustainable production.
Źródło:
Management and Production Engineering Review; 2020, 11, 2; 74-87
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Maintenance Maturity and Sustainability Assessment Model for Manufacturing Systems
Autorzy:
Franciosi, Chiara
Tortora, Alessia Maria Rosaria
Miranda, Salvatore
Powiązania:
https://bibliotekanauki.pl/articles/2201187.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
maintenance
sustainability
maintenance impact
manufacturing system
maintenance performance measurement
Opis:
Maintenance is a key manufacturing function that contributes to a company’s productivity, profitability and sustainability. Unfortunately, many aspects of the contribution of maintenance to sustainability in manufacturing remain unexplored, and many enterprises are not yet ready to assess the maintenance impacts on their sustainability. Maturity models are useful tools for assessing maintenance practices; however, no maintenance maturity model that allows the evaluation of the contribution of maintenance to sustainable performance was found in literature. This paper proposes a model for assessing the maturity and sustainability of maintenance processes. The model outputs are: a measure of the maintenance and sustainability maturity level; recommendations for improvement to undertake to enhance maintenance maturity and, thus, meet sustainability standards. The model was applied in three manufacturing enterprises: the calculation of their maintenance maturity and sustainability indices made the maintenance stakeholders more aware of the need to implement effective strategies for more sustainable maintenance performance.
Źródło:
Management and Production Engineering Review; 2023, 14, 1; 137--155
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A review of human error in marine engine maintenance
Autorzy:
Islam, R.
Anantharaman, M.
Khan, F.
Garaniya, V.
Powiązania:
https://bibliotekanauki.pl/articles/116425.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
engine room maintenance
human error
marine engine
marine engine maintenance
maritime safety
ship maintenance
maintenance activity
onboard maintenance
Opis:
Maritime safety involves minimizing error in all aspects of the marine system. Human error has received much importance, being responsible for about 80% of the maritime accident worldwide. Currently, more attention has been focused to reduce human error in marine engine maintenance. On-board marine engine maintenance activities are often complex, where seafarers conduct maintenance activities in various marine environmental (i.e. extreme weather, ship motions, noise, and vibration) and operational (i.e. work overload and stress) conditions. These environmental and operational conditions, in combination with generic human error tendencies, results in innumerable forms of error. There are numerous accidents that happened due to the human error during the maintenance activities of a marine engine. The most severe human error results in accidents due to is a loss of life. Moreover, there are other consequences too such as delaying the productivity of marine operations which results in the financial loss. This study reviews methods that are currently available for identifying, reporting and managing human error in marine engine maintenance. As a basis for this discussion, authors provide an overview of approaches for investigating human error, and a description of marine engine maintenance activities and environmental and operational characteristics.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 1; 43-47
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Importance measure-based maintenance strategy considering maintenance costs
Autorzy:
Zhang, Chao
Zhang, Yadong
Dui, Hongyan
Wang, Shaoping
Tomovic, Mileta M.
Powiązania:
https://bibliotekanauki.pl/articles/2057976.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
system reliability
importance measure
maintenance cost
preventive maintenance
opportunistic maintenance
Opis:
Maintenance is an important way to ensure the best performance of repairable systems. This paper considers how to reduce system maintenance cost while ensuring consistent system performance. Due to budget constraints, preventive maintenance (PM) can be done on only some of the system components. Also, different selections of components to be maintained can have markedly different effects on system performance. On the basis of the above issues, this paper proposes an importance-based maintenance priority (IBMP) model to guide the selection of PM components. Then the model is extended to find the degree of correlation between two components to be maintained and a joint importance-based maintenance priority (JIBMP) model to guide the selection of opportunistic maintenance (OM) components is proposed. Also, optimization strategies under various conditions are proposed. Finally, a case of 2H2E architecture is used to demonstrate the proposed method. The results show that generators in the 2E layout have the highest maintenance priority, which further explains the difference in the importance of each component in PM.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 1; 15--24
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maintenance and maintenance management systems in accommodation
Autorzy:
Mutlu Öztürk, H.
Öztürk, H. K.
Powiązania:
https://bibliotekanauki.pl/articles/367195.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
accommodation
maintenance
maintenance management
maintenance team
maintenance for hotels
zakwaterowanie
eksploatacja
utrzymanie
zarządzanie eksploatacją
zarządzanie utrzymaniem
hotel
Opis:
Purpose: of this study is to address the issue of maintenance work in the accommodation sector. The development of the means of transport, the increase in income level and the increase in comfort level create a desire for people to travel more. In the travels to different cities, accommodation facilities such as hotels, holiday villages and apartments are used. Customer satisfaction is very important for the accommodation facilities. In order to ensure customer satisfaction, the services provided should not be interrupted and all machinery and equipment must be in working condition. To ensure this, it is very important to carry out maintenance work on the plants and devices. Therefore, the establishment of a maintenance management system in accommodation facilities is very important and it is necessary to carry out maintenance work. In this context, different maintenance methods are applied in accommodation facilities. In this study, maintenance of accommodation facilities is discussed. Design/methodology/approach: Within the scope of the study, maintenance and maintenance management in accommodation facilities are discussed. The maintenance principles of accommodation facilities are discussed in detail. The places where maintenance services are conducted in accommodation facilities and maintenance methods are discussed. Findings: This study shows that that the implementation of maintenance management system will increase customer satisfaction. It has been evaluated that maintenance can be successful not only by maintenance personnel but also with the participation of all plant employees. Research limitations/implications: In order to see the importance of maintenance in accommodation facilities, it will be appropriate to compare the hotels with the maintenance management system applied and the hotels that are not implemented in terms of customer satisfaction and maintenance expenses. For the future studies, the maintenance management system in hotels can be examined in detail. Practical implications: Expanding the maintenance management practices in accommodation facilities will increase the capacity utilization rate of the hotels and increase customer satisfaction. Originality/value: In the field of maintenance, detailed studies have been carried out in the manufacturing sector for a long time and have been examined in detail. However, work in this area is quite limited, especially in accommodation facilities and hotels. In this study, the subject of accommodation facilities and maintenance of hotels was discussed in detail.
Źródło:
Journal of Achievements in Materials and Manufacturing Engineering; 2019, 96, 2; 83-93
1734-8412
Pojawia się w:
Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preventive maintenance of multiple components for hydraulic tension systems
Autorzy:
Dui, Hongyan
Zheng, Xiaoqian
Zhao, Qian Qian
Fang, Yining
Powiązania:
https://bibliotekanauki.pl/articles/2038176.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
preventive maintenance
reliability
importance measure
maintenance cost
Opis:
Automatically controlled hydraulic tension systems adjust the tension force of a conveyor belt under different working conditions. Failures of an automatically controlled hydraulic tension system influence the performance of conveyor belts. At present, the maintenance of automatically controlled hydraulic tension systems mainly considers the replacement of components when failures occur. Considering the maintenance cost and downtime, it is impossible to repair all the failed components to improve the hydraulic tension system. One of the key problems is selecting the most valuable components for preventive maintenance. In this paper, preventive maintenance for multiple components in a hydraulic tension system is analyzed. An index is proposed to select more reliable preventive maintenance components to replace the original ones. A case study is given to demonstrate the proposed method. When the cost budget increases, there are three different variations in the number of components for selective preventive maintenance (SPM).
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 3; 489-497
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proposal of content maintenance of cnc machine using methods of reliability centered maintenance
Autorzy:
Stuchlý, Vladimír
Poprocký, Roman
Čuboňová, Nadežda
Kuric, Ivan
Powiązania:
https://bibliotekanauki.pl/articles/103003.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
maintenance
reliability
reliability centered maintenance
konserwacja
niezawodność
Opis:
The paper presents the results of examination of the proposal content and the scope of maintenance of the machining center MCFV 1050 Basic through the RCM II - Reliability Centered Maintenance method. Based on the analysis of apriori and parametric reliability methods, it was decided to use the FMEA for analyze the causes and consequences of failure states using the software IQ-RM PRO 6. The structure, defined functions and fault functions were developed.The analyzed types of failure and types of maintenance tasks were processed in the RCM II Information and Decision Making Reports.The result is 10 proposed maintenance tasks performed in time intervals, 8 maintenance tasks performed as needed and 1 maintenance task performed after the specified performance.The end of the article discusses the suitability of the applied methods for the maintenance proposal and of the defined recommendations.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 3; 126-133
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maintenance grouping optimization for offshore wind turbine considering opportunities based on rolling horizon approach
Autorzy:
Lua, Y.
Suna, L.
Kanga, J.
Zhang, X.
Powiązania:
https://bibliotekanauki.pl/articles/260415.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
offshore wind turbine
opportunistic maintenance
rolling horizon
imperfect maintenance
preventive maintenance durations
Opis:
In future, offshore wind turbines may be consider a crucial part in the supply of energy. Maintenance processes are directed to attain a safe and reliable operation of offshore machines and wind turbines. In this paper, an opportunistic maintenance strategy for offshore wind turbine is proposed, considering imperfect maintenance and the preventive maintenance durations. Reliability Centric Maintenance serves as a proactive tactic to operations and maintenance by inhibiting the possible reasons of poor performance and controlling failures. Other components can implement the opportunistic preventive maintenances if one component has reached its reliability threshold. According to the rolling horizon approach, it is of great importance to update the maintenance planning for the sake of the short-term information. By figuring out the best combination, the maintenance schedule in the mission time has been finally determined. Failure information are obtained from previous studies to accomplish the calculations. The outcomes indicate that the maintenance cost has been dramatically reduced through the application of opportunistic maintenance.
Źródło:
Polish Maritime Research; 2018, 2; 123-131
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Process Variation and the Total Productive Maintenance. Case Study in the Manufacturing Plant
Autorzy:
Wojciechowski, Adrian
Powiązania:
https://bibliotekanauki.pl/articles/504148.pdf
Data publikacji:
2016
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
process variation
Total Productive Maintenance autonomous maintenance
Opis:
One of the concepts decreasing the variability of the production processes is the Total Productive Maintenance. The aim of the article is to examine the impact of the TPM implementation on the reduction of process variation on the example of the production company. In the first part of the paper a short literature review in the context of the variability of processes and the characteristics of the TPM concept has been performed. Also a way of implementation of the concept in the production company has been presented. The second part contains the description of the applied research tools, it also presents research results and shows the final conclusions regarding the impact of TPM on the process variation in the studied company.
Źródło:
Logistics and Transport; 2016, 29, 1; 25-32
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maintenance strategy development within SMEs: the development of an integrated approach
Autorzy:
Baglee, D.
Knowles, M.
Powiązania:
https://bibliotekanauki.pl/articles/971035.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
maintenance
TPM
Opis:
Maintenance can play a key role in the long-term profitability of a company in the manufacturing sector, where it can have major impact on delivery, quality and cost. The importance of maintenance has increased, as high productivity and quality can be achieved by means of well-developed and organized maintenance strategies. However, this assumes that maintenance is controlled in such a way that equipment is stopped for maintenance via a systematic schedule. With the recent advances in technology many methodologies, tools, techniques and strategies have been developed and tested. The primary methodologies are Total Productive Maintenance (TPM) and Reliability Centred Maintenance (RCM), with variations being developed to suit individual organisations. In general, there can be considerable benefits, but these are usually demonstrated in large organisations. Unfortunately, the majority of organisations are constrained by certain barriers, with the resulting loss of major benefits. These are usually the Small and Medium Sized Enterprises (SMEs). The paper identifies the barriers to the implementation of TPM within SMEs. Based upon our analysis a new maintenance methodology, the Advanced Integrated Maintenance Management System (AIMMS) is developed. AIMMS succeeds through focusing on specific maintenance tasks that will maximise gains based upon the inherent barriers within SMEs. To enable implementation, monitoring and evaluation of AIMMS, a computerized system Maintenance Management (MainMan) was developed and implemented within several of case study companies. The paper examines the implementation process in one of these companies. The results indicate that AIMMS supports strategic maintenance decisions, and helps increase equipment effectiveness by prioritizing equipment criticality and focusing on specific resources that will maximise gains based upon a return on investment.
Źródło:
Control and Cybernetics; 2010, 39, 1; 275-303
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sequential preventive maintenance policies with consideration of random adjustment-reduction features
Strategia sekwencyjnej konserwacji zapobiegawczej z uwzględnieniem cech losowej korekcji i losowej redukcji wieku
Autorzy:
Peng, W.
Liu, Y.
Zhang, X.
Huang, H.-Z.
Powiązania:
https://bibliotekanauki.pl/articles/301110.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
maintenance policy
imperfect maintenance
preventive maintenance
random maintenance efficiency
polityka konserwacji
konserwacja niepełna
konserwacja zapobiegawcza
losowa wydajność konserwacji
Opis:
In existing literature, imperfect maintenance has been widely studied and many studies treat the effectiveness of imperfect maintenance as a fixed constant. In reality, it is more realistic to regard the maintenance efficiency as a random quantity as it may not be precise value due to the lack of sufficient data and/or the variation from system to system. In this paper, a hybrid imperfect maintenance model with random adjustment-reduction parameters is proposed, and a maintenance policy, namely the sequential preventive maintenance in periodic leisure interval, is studied based on the proposed hybrid random imperfect maintenance model, and the corresponding maintenance strategy is optimized by the genetic algorithm (GA). A numerical example and an example of the fuel injection pump of diesel engines are presented to illustrate the proposed method.
W literaturze, temat konserwacji niepełnej został szeroko zbadany i wiele z opisywanych badań traktuje wydajność konserwacji niepełnej jako wartość stałą. W rzeczywistości jednak wydajność konserwacji należy traktować jako wielkość losową, ponieważ nie można jej dokładnie określić ze względu na brak wystarczających danych i / lub różnice między poszczególnymi systemami. W niniejszej pracy zaproponowano model hybrydowy konserwacji niepełnej łączący pojęcia parametrów losowej korekcji i losowej redukcji wieku. Na podstawie proponowanego modelu hybrydowego losowej konserwacji niepełnej przebadano strategię sekwencyjnej konserwacji zapobiegawczej przeprowadzanej okresowo w czasie wolnym od pracy; omawianą strategię konserwacji zoptymalizowano za pomocą algorytmu genetycznego (GA). Proponowaną metodę zilustrowano przykładem liczbowym oraz omówiono na przykładzie pompy wtryskowej paliwa do silników wysokoprężnych.
Źródło:
Eksploatacja i Niezawodność; 2015, 17, 2; 306-313
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A data-driven predictive maintenance strategy based on accurate failure prognostics
Autorzy:
Chen, Chuang
Wang, Cunsong
Lu, Ningyun
Jiang, Bin
Xing, Yin
Powiązania:
https://bibliotekanauki.pl/articles/1841691.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
predictive maintenance
failure prognostics
performance degradation
maintenance cost
Opis:
Maintenance is fundamental to ensure the safety, reliability and availability of engineering systems, and predictive maintenance is the leading one in maintenance technology. This paper aims to develop a novel data-driven predictive maintenance strategy that can make appropriate maintenance decisions for repairable complex engineering systems. The proposed strategy includes degradation feature selection and degradation prognostic modeling modules to achieve accurate failure prognostics. For maintenance decision-making, the perfect time for taking maintenance activities is determined by evaluating the maintenance cost online that has taken into account of the failure prognostic results of performance degradation. The feasibility and effectiveness of the proposed strategy is confirmed using the NASA data set of aero-engines. Results show that the proposed strategy outperforms the two benchmark maintenance strategies: classical periodic maintenance and emerging dynamic predictive maintenance.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 2; 387-394
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany w zarządzaniu eksploatacją środków trwałych
Changes in asset operation management
Autorzy:
Szewczak, K.
Powiązania:
https://bibliotekanauki.pl/articles/256455.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:
eksploatacja
strategia obsługiwania
środki trwałe
TPM
Total Productive Maintenance
OEE
Overall Equipment Effectiveness
PM
preventive maintenance
PDM
Predictive Maintenance
operation
maintenance strategies
asset
predictive maintenance
Opis:
W turbulentnym otoczeniu konieczne jest stałe dokonywanie zmian w systemie zarządzania przedsiębiorstwem w celu dostosowania metod zarządzania do tych zmian. Dotyczy to także zmian w metodach zarządzania eksploatacją środków trwałych. W oparciu o doświadczenia japońskie i amerykańskie ukształtowała się teoria obsługiwania od obsługiwania prewencyjnego do "najlepszych praktyk" w ramach koncepcji biznesowej strategii zarządzania eksploatacją.
In turbulent environment it is necessary permanently to make changes in enterprise management system in order to adjust methods to the changes, what also causes changes in asset operation management. Based on Japanese and American experiences it was formed maintenance theory - from preventive maintenance to "best practices" - within the framework of business concept of operation management strategy.
Źródło:
Problemy Eksploatacji; 2012, 1; 109-118
1232-9312
Pojawia się w:
Problemy Eksploatacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testing the integrated package of tools supporting decision making on identification, prediction and optimization of complex technical systems operation, reliability and safety. Part 6. IS&RDSS Application – Exemplary system operation cost analysis and maintenance optimization
Autorzy:
Kołowrocki, K.
Soszyńska-Budny, J.
Xie, M.
Powiązania:
https://bibliotekanauki.pl/articles/2069548.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
operation cost
complex systems
corrective maintenance
preventive maintenance
Opis:
The way of operation cost analysis of the complex technical system at the variable operation conditions and its application to the evaluation of the cost before and after the exemplary system operation process optimization is presented. The methods of corrective and preventive maintenance policy maximizing availability and minimizing renovation cost of the complex technical systems in variable operation conditions are presented and applied to the exemplary system.
Źródło:
Journal of Polish Safety and Reliability Association; 2011, 2, 2; 435--444
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability Based Optimal Preventive Maintenance Policy of Series-parallel systems
Autorzy:
Peng, W.
Huang, H-Z.
Zhang, X.
Liu, Y.
Li, Y.
Powiązania:
https://bibliotekanauki.pl/articles/301465.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
preventive maintenance
series-parallel systems
reliability based maintenance
Opis:
To reduce the maintenance cost and improve the effectiveness of the maintenance activities in series-parallel systems, a preventive maintenance (PM) decision model for series-parallel systems subject to reliability was developed. This model considered the effect of failure maintenance on PM cycle and the restriction of system reliability in maintenance decision making, thus can help decision-maker to arrange appropriate and effective maintenance activities. Finally, an example was given to validate the proposed model.
Źródło:
Eksploatacja i Niezawodność; 2009, 2; 4-7
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using fuzzy logic to support maintenance decisions according to Resilience-Based Maintenance concept
Autorzy:
Bukowski, Lech
Werbińska-Wojciechowska, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/1841743.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
maintenance
system resilience
maintenance capability
fuzzy logic
uncertainty
Opis:
Many authors have highlighted the importance of physical assets maintenance management in relation to resilience engineering, especially for systems operating under significant uncertainty. Thus, the authors presented a new approach to system maintenance based on resilience concept implementation. They introduced Maintenance Support Potentials (MSP) as a measure of an organization's maintenance support capacity. Moreover, based on the MSP definition, they developed a fuzzy-based organization's maintenance support potential level assessment method. The proposed approach takes into account two main MSP parameters – potential readiness level and process regency. It followed four main steps, including organization's MSP identification/evaluation, MSP weights assessment, Maintenance Support Capacity assessment, and final reasoning. A case study of a global manufacturer from the automotive industry is presented to illustrate the method's applicability. The authors also indicated further research directions to optimize the maintenance strategy based on Resilience-Based Maintenance concept.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 2; 294-307
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the concept of the new methodology for the evaluation of ship planned maintenance system
Autorzy:
Stanivuk, T.
Stazić, L.
Vidović, F.
Bratić, K.
Powiązania:
https://bibliotekanauki.pl/articles/2063953.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
ship operation problems
maintenance system
Planned Maintenance System
assessment process
expert opinion
onboard maintenance
Opis:
The paper presents an attempt to develop better and cheaper methodology for evaluation of the quality of the ships’ computerized Planned Maintenance System databases. A concept for the better methodology has been developed following many times verified rule that faster and cheaper is better. The concept of the methodology has been checked in operation, tested on four different databases. Results of the evaluation performed by the concept are compared with an expert evaluation using old, verified methodology, performed on same databases. Comparison valuated the concept, bringing the verdict if it is functioning or not, showing that the old and verified rule is not functioning every time.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 3; 739--742
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method for obtaining the preventive maintenance interval in the absence of failure time data
Autorzy:
Sánchez-Herguedas, Antonio
Mena-Nieto, Ángel
Rodrigo-Muñoz, Francisco
Powiązania:
https://bibliotekanauki.pl/articles/2175137.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
ship maintenance
preventive interval
maintenance model
semi-Markovian process
incomplete data
Weibull function
maintenance costs
Opis:
One of the ways to reduce greenhouse gas emissions and other polluting gases caused by ships is to improve their maintenance operations through their life cycle. The maintenance manager usually does not modify the preventive intervals that the equipment manufacturer has designed to reduce the failure. Conditions of use and maintenance often change from design conditions. In these cases, continuing using the manufacturer's preventive intervals can lead to non-optimal management situations. This article proposes a new method to calculate the preventive interval when the hours of failure of the assets are unavailable. Two scenarios were created to test the effectiveness and usefulness of this new method, one without the failure hours and the other with the failure hours corresponding to a bypass valve installed in the engine of a maritime transport surveillance vessel. In an easy and fast way, the proposed method allows the maintenance manager to calculate the preventive interval of equipment that does not have installed an instrument for measuring operating hours installed.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 3; 564--573
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optymalizacja przerw konserwacyjnych
Optimization of preventive maintenance intervals
Autorzy:
Jurča, V.
Hladík, T.
Aleš, Z.
Powiązania:
https://bibliotekanauki.pl/articles/300678.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
eksploatacja
optymalizacja
przerwa konserwacyjna
maintenance
optimization
preventive maintenance interval
Opis:
In the paper, the methodology of optimization of planned preventive maintenance is proposed, which is based on the utilization of data obtained from a maintenance information system - adjusting the database structure, collection and processing of data. The data processing algorithm is based on the application of theory of replacement and its modification for the given problem. The core principle of the algorithm is the minimization of costs of maintenance and operation of production equipment. The algorithm can be either used as a separate tool or integrated into the computer maintenance management system as a complementary module. Therefore it enables to optimize the intervals of various levels of planned preventive maintenance of most of the production equipment in a company. A practical example of application of such algorithm is presented in the end of the paper.
W niniejszej pracy zaproponowano metodologię optymalizacji planowych prac konserwacyjnych opartą na wykorzystaniu danych pozyskanych z systemu informacji eksploatacyjnej - dopasowaniu struktury bazy danych, sposobu jej gromadzenia i przetwarzania. Algorytm przetwarzania danych opiera się na zastosowaniu teorii wymiany i jej modyfikacji dla danego problemu. Centralną zasadą algorytmu jest minimalizacja kosztów utrzymania i użytkowania sprzętu produkcyjnego. Algorytm ten może być używany jako oddzielne narzędzie lub może być integrowany z systemem komputerowego zarządzania eksploatacją i utrzymaniem ruchu jako moduł uzupełniający. Tym samym pozwala on na optymalizację przerw poświęconych różnego zakresu planowym pracom konserwacyjnym większości sprzętu produkcyjnego w przedsiębiorstwie. Przykład praktycznego zastosowania takiego algorytmu przedstawiono w końcowej części pracy.
Źródło:
Eksploatacja i Niezawodność; 2008, 3; 41-44
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maintenance cost study for deteriorating systems : age-replacement policy vs. condition-based maintenance policy
Autorzy:
Bouvard, K.
Artus, S.
Bérenguer, C.
Cocquempot, V.
Powiązania:
https://bibliotekanauki.pl/articles/2069558.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
maintenance cost
degradation model
age-replacement
condition-based maintenance
Opis:
This paper deals with the maintenance cost of deteriorating systems. Two maintenance strategies are studied: age-replacement and condition-based maintenance. To compare these two policies, degradation models are used: these models characterize the degradation level but also the system time-to-failure. In order to compute the optimal condition-based maintenance cost, we suppose that the main influencing sources are the preventive threshold, the inspection frequency and the inspection cost. Numerical examples illustrate the maintenance cost computation and compare the optimal costs of both policies.
Źródło:
Journal of Polish Safety and Reliability Association; 2008, 1; 85--92
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selective maintenance optimization with stochastic break duration based on reinforcement learning
Autorzy:
Liu, Yilai
Qian, Xinbo
Powiązania:
https://bibliotekanauki.pl/articles/2200939.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
selective maintenance
stochastic break duration
imperfect maintenance
reinforcement
learning
Opis:
For industrial and military applications, a sequence of missions would be performed with a limited break between two adjacent missions. To improve the system reliability, selective maintenance may be performed on components during the break. Most studies on selective maintenance generally use minimal repair and replacement as maintenance actions while break duration is assumed to be deterministic. However, in practical engineering, many maintenance actions are imperfect maintenance, and the break duration is stochastic due to environmental and other factors. Therefore, a selective maintenance optimization model is proposed with imperfect maintenance for stochastic break duration. The model is aimed to maximize the reliability of system successfully completing the next mission. The reinforcement learning(RL) method is applied to optimally select maintenance actions for selected components. The proposed model and the advantages of the RL are verified by three case studies verify.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 4; 771--784
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Strategic Roadmap to Improve the Maturity Level of Maintenance Information Management Systems
Autorzy:
Tortora, Alessia Maria Rosaria
Di Pasquale, Valentina
Iannone, Raffaele
Powiązania:
https://bibliotekanauki.pl/articles/24200514.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
industrial maintenance
maintenance management information systems
MMIS
small and medium enterprises
SME
maintenance maturity models
Opis:
Maintenance involves a large amount of data management. Although many tools, strategies, and systems, have been developed to organize the maintenance information resources, SMEs have not found the same benefits as large companies due to their inherent characteristics and, above all, the maturity level of the maintenance department. Maturity models are useful tools for assessing the maturity of maintenance information practices; however, existing models are not suitable for any type of business context, as they required companies to have a clear organizational structure and definite informative infrastructure. Moreover, they do not assist in identifying and defining actions to reach the highest level. This paper proposes a model for assessing and improving maintenance management information practices. It allows a clear measure of the maturity of the maintenance information management practices in industrial contexts and provides improvement actions identifying the information and data needed to enhance maintenance management information practices.
Źródło:
Management and Production Engineering Review; 2023, 14, 3; 98--117
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Niemiecki proces alimentacyjny
The German maintenance procedure
Autorzy:
Wudarski, Arkadiusz
Powiązania:
https://bibliotekanauki.pl/articles/2037321.pdf
Data publikacji:
2021-09-30
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
German maintenance law
multidimensionality of maintenance
maintenance procedure
niemieckie prawo alimentacyjne
wielowymiarowość alimentacji
proces alimentacyjny
Opis:
Artykuł omawia niemiecką monografię poświęconą prawu alimentacyjnemu Unterhaltsprozess (Eschenbruch, Wolters Kluwer 2021). Autor poszukuje wielowymiarowości alimentacji zarówno w wymiarze krajowym, jak i międzynarodowym, a ocena uwzględnia interdyscyplinarny i transgraniczny charakter tej problematyki, która łączy prawo rodzinne z prawem publicznym, socjalnym, procesowym, podatkowym, europejskim oraz prywatnym międzynarodowym. W tych ramach omówiono zakres i strukturę monografii, która nie ogranicza się do przestawienia aktualnego stanu prawnego, ale dokumentuje również ewolucję prawa alimentacyjnego, wytycza nowe kierunki rozwoju, a także zawiera propozycje zmian legislacyjnych. Autor wskazuje cechy wyróżniające ocenianą monografię od innych opracowań dostępnych na rynku podkreślając wyjątkowo szeroką analizę orzecznictwa sądów apelacyjnych. Szerszej analizie i ocenie poddano zagadnienia związane z pieczą naprzemienną, alimentacją pomałżeńską, świadczeniami socjalnymi, pozycją prawną ojca biologicznego oraz alimentacją transgraniczną. Z perspektywy prawnoporównawczej zauważono natomiast skromne odniesienia do prawa obcego, które warto poszerzyć i usystematyzować. Oceny monografii dokonano zarówno pod względem naukowym jak i praktycznym. Szczególną uwagę zwrócono przy tym na możliwość wykorzystania niemieckich regulacji i doświadczenia w polskim porządku prawnym.
This article reviews the German book on the maintenance law Unterhaltsprozess (Eschenbruch, Wolters Kluwer 2021). The author searches for the multidimensionality of maintenance, both in the national and international dimension, and the assessment takes into account the interdisciplinary and the cross-border nature of this issue, which combines family law with public, social, procedural, tax, European, and private international law. Within this framework, the scope and structure of the monograph is discussed, which is not limited to presenting the current legal regulation, but also documents the evolution of the maintenance law, sets new directions for development, and includes proposals for legislative changes. The author indicates features that distinguish the reviewed monograph from other studies available on the market, emphasizing the exceptionally broad analysis of the jurisprudence of courts of appeal. The issues related to joint custody, post-marital maintenance, social benefits, the legal position of the biological father, and cross-border maintenance, were subject to a broader analysis and assessment. From the comparative legal perspective, however, attention is drawn to the modest references to foreign law, which call for further expansion and systematization. The monograph is assessed both in terms of research and practice. Particular attention is paid to the possibility of using German regulations and experience in the Polish legal system.
Źródło:
Ruch Prawniczy, Ekonomiczny i Socjologiczny; 2021, 83, 3; 373-389
0035-9629
2543-9170
Pojawia się w:
Ruch Prawniczy, Ekonomiczny i Socjologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Istota strategii eksploatacji wg kryteriów niezawodności
The essence of the exploitation strategy according to reliability criteria
Autorzy:
Goliasz, Tomasz
Pszczółkowski, Józef
Powiązania:
https://bibliotekanauki.pl/articles/311379.pdf
Data publikacji:
2019
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
eksploatacja
strategia eksploatacji
niezawodność
RCM (Reliability Centered Maintenance)
Reliability
RCM (Reliability Centred Maintenance)
maintenance strategies evolution
Opis:
W artykule scharakteryzowano strategie eksploatacji urządzeń technicznych. Przedstawiono ich ewolucję z uwzględnieniem zmian filozofii i kryteriów eksploatacji. Dokonano analizy strategii eksploatacji według kryteriów niezawodności, możliwości jej stosowania w aspekcie wspierania procesu decyzyjnego eksploatacji sprzętu. Omówiono strategię eksploatacji RCM (Reliability Centered Maintenance), która może być i jest coraz częściej stosowana w procesach utrzymania maszyn oraz w aspekcie realizacji m.in. procesów produkcyjnych w przedsiębiorstwie. Dokonano oceny możliwości stosowania strategii w wojskowym systemie eksploatacji.
The article discusses the strategies for using the equipment. The authors remind the evolution of the development of exploitation strategies. The exploitation strategy according to reliability and the possibilities of its application in the aspect of supporting the decision process of equipment operation is analyzed. The RCM strategy is discussed, which can be successfully applied in the aspect of the reliability of the implementation of, among ot hers, production processes in the enterprise.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2019, 20, 6; 161-167
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Setting periodic maintenance intervals for diesel engines operated under difficult conditions
Autorzy:
Dobržinskij, N.
Powiązania:
https://bibliotekanauki.pl/articles/348499.pdf
Data publikacji:
2017
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
engine
reliability
maintenance
Opis:
Afghan highlands, landscape and altitude above the sea level, and geographical situation influence on the climate. Engines’ operation are very different from their work in European plains. Mountainous terrain variability has a significant impact on operation mode of the car’s chassis and transmission, and climate change determines the engine performance parameters. Mentioned factors result in technical performance characteristics and their costs. Defining requirements to preventive measures for technical failure would reduce technical repair costs and rational technical maintenance frequency would save funds for maintenance.
Źródło:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2017, 1; 173-188
1731-8157
Pojawia się w:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computer-aided maintenance and reliability management systems for conveyor belts
Systemy informatycznego wspomagania eksploatacji i zapewnienia niezawodności przenośników taśmowych
Autorzy:
Mazurkiewicz, D.
Powiązania:
https://bibliotekanauki.pl/articles/301543.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
computer-aided maintenance management systems
belt conveyors
maintenance
computer aided maintenance management systems
przenośniki taśmowe
eksploatacja
Opis:
Operational reliability of conveyor transport systems is a problem that relates to the provision of an adequate level of availability of a continuous transport system, which in the case of belt conveyors depends not only on their usability, as determined by their design and manufacture, but also on the appropriate level of their use, understood, among others, as the degree of sophistication and effectiveness of the methods and tools applied in industrial diagnosis of those devices. The present article describes the most popular diagnostic systems used in the maintenance of internal transport conveyor systems. Also a new method of computer-aided maintenance of such systems is presented.
Niezawodność eksploatacyjna systemów transportu przenośnikowego, to zagadnienie dotyczące zapewnienia odpowiedniego poziomu gotowości systemu transportu ciągłego, który w przypadku przenośników taśmowych zależny jest nie tylko od ich walorów użytkowych, determinowanych zastosowanymi rozwiązaniami konstrukcyjnymi i wykonawstwem, ale też zależy w istotnym stopniu od właściwego poziomu ich użytkowania, rozumianego między innymi jako stopień zaawansowania i skuteczności zastosowanych metod i narzędzi diagnostyki przemysłowej. W artykule scharakteryzowano najpopularniejsze systemy diagnostyczne stosowane w eksploatacji przenośnikowych systemów transportu wewnątrzzakładowego. Zaprezentowano również nową metodę komputerowego wspomagania w utrzymaniu ruchu tego typu systemów.
Źródło:
Eksploatacja i Niezawodność; 2014, 16, 3; 377-382
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maintenance obligation in Poland
Autorzy:
Kuzior, P.
Powiązania:
https://bibliotekanauki.pl/articles/324393.pdf
Data publikacji:
2018
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
maintenance
maintenance obligation
alimony
public support
maintenance debtor
zobowiązanie
obowiązek alimentacyjny
alimenty
wsparcie publiczne
dłużnik alimentacyjny
Opis:
Lack of implementation of the maintenance obligation is becoming an increasingly important social problem. The article shows various legal institutions which are to help satisfying the needs of people entitled to alimony who do not get them, and who are not able to stand by themselves. The aim of the paper is to present ways to help such people, both in the light of public and private law. The article discusses the conditions that have to be met in order to be allowed to get public support.
Źródło:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2018, 122; 111-120
1641-3466
Pojawia się w:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extending the Scope of ECM Certification
Autorzy:
Gamon, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/504632.pdf
Data publikacji:
2019
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
Maintenance Management Systems (MMS)
Entity in charge of maintenance (ECM)
Opis:
The Commission Regulation (EU) No 445/2011 introduced requirements on certification system for Entities in Charge of Maintenance (ECM). It contains requirements regarding the need to create and, more importantly, verify by the certifying body of the Maintenance Management System (MMS). It assumes that only Entities in Charge of Maintenance for freight wagons will be subject to certification. With the development of legislation on the safety of rail transport the extension of ECM certification began. The article presents the proposal of the European Union Agency for Railways to extend the scope of Commission Regulation (EU) No. 445/2011 and discusses the most important changes.
Źródło:
Logistics and Transport; 2019, 42, 2; 15-20
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Algorithm for choosing the most optimal maintenance companies
Algorytm wyboru optymalnego sposobu prowadzenia firmy
Autorzy:
Salimov, R.
Vlasenko, P.
Powiązania:
https://bibliotekanauki.pl/articles/213216.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
maintenance
reliability
maintenance cost
utrzymanie
niezawodność
jakość konserwacji
koszty utrzymania
Opis:
The algorithm for choosing the most optimal Maintenance Company is considered. The cost and quality rates such as Maintenance Cost, the Cost of Waiting Lines, the Costs of Aircraft Shipping to Maintenance Station, the Cost of After-maintenance Service, the Maintenance Quality rate are described. Ranges of permissible values of these parameters are justified.
Algorytm wyboru optymalnego utrzymania Firmy musi być przemyślany. W publikacji opisane są koszty i jakość. Przytoczono takie wskaźniki jak koszty utrzymania, koszty przestojów, koszty przewozów lotniczych, koszty uruchomienia serwisu, prędkość dostaw, jakość wykonania, konserwacja. W artykule uzasadniono zakresy dopuszczalnych wartości tych parametrów.
Źródło:
Prace Instytutu Lotnictwa; 2013, 5-6 (232-233); 109-114
0509-6669
2300-5408
Pojawia się w:
Prace Instytutu Lotnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodology for determining machine quality points. Case study
Autorzy:
Wojciechowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/409457.pdf
Data publikacji:
2018
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
machine quality points
Total Productive Maintenance
quality assurance
quality maintenance
Opis:
The article addresses issues related to quality assurance in manufacturing companies based on the guidelines of quality maintenance pillar under the Total Productive Maintenance concept. The first part of the article presents the methodological steps for determining machine quality points. The second part contains a case study on the implementation of methodology in the manufacturing plant in the lighting industry. The article shows a positive influence of the methodology on the reduction of quality defects in the examined plant.
Źródło:
Research in Logistics & Production; 2018, 8, 3; 263-274
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Component Maintenance Strategies and Risk Analysis for Random Shock Effects Considering Maintenance Costs
Autorzy:
Zhang, Chao
Zhang, Yadong
Dui, Hongyan
Wang, Shaoping
Tomovic, Mileta M.
Powiązania:
https://bibliotekanauki.pl/articles/24200830.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
system reliability
preventive maintenance
importance measure
maintenance cost
random shock
Opis:
Maintenance can improve a system’s reliability in a long operation period or when a component has failed. The reliability modeling method that uses the stochastic process degradation model to describe the system degradation process has been widely used. However, the existing reliability models established using stochastic processes only consider the internal degradation process, and do not fully consider the impact of external random shocks on their reliability modeling. Furthermore, the existing theory of importance does not consider the actual factors of maintenance cost. In this paper, based on the reliability modeling of random processes, the degradation rate under the influence of random shocks is introduced into the time scale function to solve the impact of random shocks on product reliability, and two cost importance measures are proposed to guide the maintenance selection of the components under limited resources in the system. Finally, a subsystem of an aircraft hydraulic system is analyzed to verify the proposed method’s performance.
Źródło:
Eksploatacja i Niezawodność; 2023, 25, 2; art. no. 162011
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected organizational aspects of maintenance organization modelling
Wybrane organizacyjne aspekty modelowania organizacji utrzymania ruchu
Autorzy:
Loska, A.
Powiązania:
https://bibliotekanauki.pl/articles/410139.pdf
Data publikacji:
2011
Wydawca:
STE GROUP
Tematy:
utrzymanie ruchu
eksploatacja
zarządzanie utrzymaniem ruchu
modelowanie
organizacja utrzymania ruchu
maintenance
exploitation
maintenance management
modelling
maintenance organization
Opis:
In the article there was made the review and evaluation of modeling selected methods of the maintenance organization parts. Based on the main objectives of this organization, there was specyfied the set of structural and system connections into maintenance organization. The set was extracted from the model called Business Centered Maintenance. Then there presented and discussed the possibility of modeling of the maintenance organization using two-and three-dimensional models.
W artykule dokonano przeglądu i oceny wybranych sposobów modelowania elementów organizacji utrzymania ruchu. W oparciu o przedstawione główne cele takiej organizacji, wyróżniono zbiór powiązań strukturalnych i systemowych z wykorzystaniem modelu Business Centered Maintenance. Następnie zaprezentowano i omówiono możliwości modelowania organizacji utrzymania ruchu z wykorzystaniem modeli dwu i trójwymiarowych.
Źródło:
Management Systems in Production Engineering; 2011, 4 (4); 13-18
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preventive maintenance models – higher operational reliability
Modele konserwacji zapobiegawczej a wyższa niezawodność eksploatacyjna
Autorzy:
Legát, V.
Mošna, F.
Aleš, Z.
Jurča, V.
Powiązania:
https://bibliotekanauki.pl/articles/301589.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
preventive maintenance
predictive maintenance
maintenance interval optimization
reliability
improvement
konserwacja zapobiegawcza
konserwacja predykcyjna
optymalizacja przerw konserwacyjnych
doskonalenie niezawodności
Opis:
The authors present a method for determining the optimal interval for preventive periodical maintenance and an optimal diagnostic parameter for predictive maintenance/replacement. Additionally, the authors raise the question: how does preventive maintenance influence the probability of failure and the operational reliability of system elements that have undergone preventive periodical maintenance? They answer the question using analytical and simulation computing approaches. The results are in quantitative form, giving relationships between preventive maintenance intervals and reliability functions. Examples demonstrate suitability of the method for typical engineering objects using a three parameters Weibull distribution. Application of the method is of substantial benefit to both the manufacturer and the user of technical equipment.
Autorzy przedstawiają metodę określania optymalnego czasu przerwy na okresową konserwację zapobiegawczą oraz optymalnego parametru diagnostycznego dla konserwacji predykcyjnej/wymiany Dodatkowo, autorzy zadają pytanie, jaki jest wpływ konserwacji zapobiegawczej na prawdopodobieństwo wystąpienia uszkodzenia oraz na niezawodność eksploatacyjną elementów systemu, w stosunku do których zastosowano okresową konserwację zapobiegawczą. Odpowiedzi na te pytania, autorzy poszukują posługując się metodami analizy i symulacji komputerowej. Wyniki podane w formie ilościowej, informują o związkach między przerwami na konserwację predykcyjną a funkcjami niezawodnościowymi. Podane przykłady pokazują, z wykorzystaniem trójparametrowego rozkładu Weibulla, że proponowana metoda może być stosowana w przypadku typowych obiektów inżynieryjnych. Zastosowanie omawianej metody przynosi znaczące korzyści zarówno wytwórcom jak i użytkownikom sprzętu technicznego.
Źródło:
Eksploatacja i Niezawodność; 2017, 19, 1; 134-141
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimisation of the technical object maintenance system taking account of risk analysis results
Optymalizacja systemu obsługi obiektów technicznych z uwzględnieniem wyników analizy ryzyka
Autorzy:
Gill, A.
Powiązania:
https://bibliotekanauki.pl/articles/1365622.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
optymalizacja
system obsługiwania
ryzyko
optimisation
maintenance system
risk
risk based maintenance
Opis:
The article presents the author’s original method of optimisation of the technical object maintenance system taking account of risk analysis results. An original form of the objective function was formulated, in which a risk measure model based on two criteria was used. RBM methods were discussed and technical object maintenance methods/strategies were reviewed, with their most important characteristics pointed out. The process of making maintenance-related decisions is armed with procedures based on a risk valuation pattern. The author’s original risk valuation pattern was presented and special cases resulting from the use of such patterns were discussed. Dynamic programming was used to solve the problem of optimisation. The author’s original mathematical model of the method of optimisation was developed and presented, and its four-stage calculation algorithm was presented in detail. Based on the collected statistical data on damage, hazard analysis and risk assessment procedures were carried out. Using computer implementation of the optimisation model, an experiment in planning the maintenance of the technical objects examined was carried out and the results of the optimisation experiment were presented.
W artykule przedstawiono autorską metodę optymalizacji systemu obsługi obiektów technicznych z uwzględnieniem wyników analizy ryzyka. Sformułowano oryginalną postać funkcji celu, w której użyto modelu miary ryzyka opartego na dwóch kryteriach. Omówiono metody RBM oraz dokonano przeglądu metod/strategii obsługiwania obiektów technicznych wskazując ich najważniejsze cechy. Podejmowanie decyzji obsługowych uzbrojone jest w procedury oparte na schemacie wartościowania ryzyka. Przedstawiono autorski schemat wartościowania ryzyka i omówiono szczególne przypadki wynikające z użycia takich schematów. Do rozwiązania problemu optymalizacji użyto programowania dynamicznego. Opracowano i przedstawiono autorski matematyczny model metody optymalizacji oraz szczegółowo zaprezentowano jego czteroetapowy algorytm obliczeniowy. Na podstawie zebranych danych statystycznych dotyczących uszkodzeń, przeprowadzono procedury w zakresie analizy zagrożeń i oceny ich ryzyka. Wykorzystując implementację komputerową modelu optymalizacyjnego przeprowadzono eksperyment w zakresie planowania obsług rozpatrywanych obiektów technicznych oraz przedstawiono wyniki eksperymentu optymalizacyjnego.
Źródło:
Eksploatacja i Niezawodność; 2017, 19, 3; 420-431
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of ship repair time using the genetic algorithm
Autorzy:
Zagan, Remus
Paprocka, Iwona
Manea, Mihaela-Greti
Manea, Emill
Powiązania:
https://bibliotekanauki.pl/articles/1955595.pdf
Data publikacji:
2021
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
mean time of dry-docking
average repair time
maintenance duration prediction
maintenance duration estimation
ship maintenance
genetic algorithm
Opis:
Ship maintenance is regulated by both the state and the classification society. The scope of maintenance works depends on the age of the ship and includes a dock, intermediate and special inspection. The problem is to estimate the reliable time of the ship maintenance and the downtime at the shipyard. The purpose of this article is to develop a more accurate model to predict a ship’s overall maintenance time. A multiple linear regression model is developed to describe the impact of historical data on hull repair, painting time, piping, age, structural and hull plate replacement for ship maintenance. In the literature, the least squares method is used to estimate unknown regression coefficients. The original value of the article is the use of a genetic algorithm to estimate coefficient values of the multiple linear regression model. Necessary analysis and simulations are performed on the data collected for oil and chemical or product tankers. As a result, a significant improvement in the adequacy of the presented model was identified.
Źródło:
Polish Maritime Research; 2021, 3; 88-99
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integrated operation and maintenance optimization for high-speed train fleets considering passenger flow
Autorzy:
Liu, Jiankun
Jiang, Zuhua
Zhou, Hongming
Powiązania:
https://bibliotekanauki.pl/articles/2087012.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
preventive maintenance
high-speed train
fleet operation and maintenance
passenger flow
Opis:
A joint optimization model of maintenance and operation of high-speed train fleets is established with the optimization objective of minimizing the total costs, considering dynamic passenger flow and maintenance resources. A new maintenance strategy CCPM (Coordinating Conflicts Preventive Maintenance) is proposed to optimize the problem. The effectiveness of the model and the strategy are verified by numerical examples. The comparison between the strategy in the paper and the existing approach proves that the new strategy is more effective and shows the importance of considering dynamic passenger flow. The model and the strategy provide decision support for the actual high-speed trains operation and maintenance program. This study also offers new ideas to the subsequent research on preventive maintenance of high-speed trains.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 2; 297--305
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Perception on Preventive Maintenance in Civil Engineering Laboratory
Autorzy:
Ganiron Jr, Tomas U. Ganiron
Powiązania:
https://bibliotekanauki.pl/articles/1178757.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ce laboratory materials engineering management
maintenance management
maintenance planning
safety precautions
Opis:
Preventive maintenance as a component of facilities maintenance system is to maximize the useful life of all laboratory system. This descriptive study aimed to assess the effectiveness of the preventive maintenance program of Civil Engineering Department in FEATI University. The individual respondents were drawn from the engineering students and faculty members, and employees of the respondent institution. These are the respondents who used the civil engineering laboratory. It utilized validated researcher-made questionnaire, unstructured interview, and documentary analysis as its data gathering instruments. The data gathered were treated using frequency and percentage count.
Źródło:
World Scientific News; 2017, 61, 2; 137-149
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Short and long forecast to implement predictive maintenance in a pulp industry
Autorzy:
Rodrigues, João Antunes
Farinha, José Torres
Mendes, Mateus
Mateus, Ricardo
Cardoso, António Marques
Powiązania:
https://bibliotekanauki.pl/articles/2057978.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
predictive maintenance
condition based maintenance
time series
artificial neural networks
forecasting
Opis:
Predictive maintenance is very important for effective prevention of failures in an industry. The present paper describes a case study where a wood chip pump system was analyzed, and a predictive model was proposed. An Ishikawa diagram and FMECA are used to identify possible causes for system failure. The Chip Wood has several sensors installed to monitor the working conditions and system state. The authors propose a variation of exponential smoothing technique for short time forecasting and an artificial neural network for long time forecasting. The algorithms were integrated into a dashboard for online condition monitoring, where the users are alerted when a variable is determined or predicted to get out of the expected range. Experimental results show prediction errors in general less than 10 %. The proposed technique may be of help in monitoring and maintenance of the asset, aiming at greater availability.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 1; 33--41
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Particle Swarm Optimization Fuzzy Systems for the Age Reduction Imperfect Maintenance Model
Autorzy:
Li, Che-Hua
Powiązania:
https://bibliotekanauki.pl/articles/301843.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
imperfect maintenance
preventive maintenance
reliability
fuzzy modeling
particle swarm optimization (PSO)
Opis:
This research includes two topics: (1) the modeling of periodic preventive maintenance policies over an infi nite time span for repairable systems with the reduction of the degradation rate after performing an imperfect preventive maintenance (PM) activity; (2) the parameter estimation of failure distribution and the restoration effect of PM from the proposed PM policy for deteriorating systems. The concept of the improvement factor method is applied to measure the restoration effect on the degradation rate for a system after each PM. An improvement factor is presented as a function of the system's age and the cost of each PM. A periodic PM model is then developed. The optimal PM interval and the optimal replacement time for the proposed model can be obtained by minimizing the objective functions of the cost rate through the algorithms provided by this research. An example of using Weibull failure distribution is provided to investigate the proposed model. The method is proposed to estimate the parameters of the failure process and the improvement effect after each PM by analyzing maintenance and failure log data. In this method, a PSO-based method is proposed for automatically constructing a fuzzy system with an appropriate number of rules to approach the identifi ed system. In the PSO-based method, each individual in the population is constructed to determine the number of fuzzy rules and the premise part of the fuzzy system, and then the recursive least-squares method is used to determine the consequent part of the fuzzy system constructed by the corresponding individual. Consequently, an individual corresponds to a fuzzy system. Subsequently, a fi tness function is defi ned to guide the searching procedure to select an appropriate fuzzy system with the desired performance. Finally, two identifi cation problems of nonlinear systems are utilized to illustrate the effectiveness of the proposed method for fuzzy modeling.
Źródło:
Eksploatacja i Niezawodność; 2008, 4; 28-34
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concept of supportive spreadsheet application in the survey of production departments’ satisfaction with services of maintenance departments
Autorzy:
Szczęśniak, B.
Powiązania:
https://bibliotekanauki.pl/articles/359087.pdf
Data publikacji:
2012
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
spreadsheet
internal customer
maintenance
Opis:
In order to be able to use the method of surveying satisfaction of production departments with the services provided by maintenance departments, one must first acquire and analyse considerable amounts of data. Such an attempt may only be successful if an appropriate information tool is used. This article provides a discussion on the concept of an MS Excel spreadsheet application for the sake of creating such a tool. The author has proposed a specific data structure enabling storage of the data acquired in the course of research. The entities occurring in it have been identified and discussed, and so have the attributes assigned to individual entities. The author has also elaborated on the spreadsheet mechanisms which allow for data processing in accordance with the premises of the aforementioned method.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 32 (104) z. 1; 91-96
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On a systematic approach to development of maintenance plans for production equipment
Autorzy:
Mikler, J.
Frangoudis, C.
Lindberg, B.
Powiązania:
https://bibliotekanauki.pl/articles/99615.pdf
Data publikacji:
2011
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
reliability
maintenance
RCM
TRIZ
Opis:
Reliability is a collective term covering several abilities of the technical system: to deliver required functions, to uphold quality of products and services, to assure that the safety requirements associated with the system are properly fulfilled with regards both to the users and the environment and finally to uphold the durability of the technical system during its whole life cycle. All this has to be performed at acceptable risks, optimal cost, and correspond to operational needs of the business. Even though there is an advanced, well thought-out concept for this purpose - reliability centred maintenance (RCM) - that correctly applied might result in very good quality maintenance programs, it is not broadly used in the industry due to the vast efforts required for its implementation. An appropriate methodology supporting systematic functional break down of a studied systems, and guidelines how to couple functional failures to failure modes, integrated with RCM, would greatly speed up generating of effective maintenance programs. In this paper we present our research towards development of such a methodology, and show a pilot implementation to analysis of machine tool spindle. The methodology is based on Hubka's theory of design and AFD/TRIZ.
Źródło:
Journal of Machine Engineering; 2011, 11, No. 1-2; 87-101
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Systemy zarządzania utrzymaniem ruchu w przedsiębiorstwach rolnych w Republice Czeskiej
Maintenance management systems in agricultural companies in the Czech Republic
Autorzy:
Jurca, V.
Ales, Z.
Powiązania:
https://bibliotekanauki.pl/articles/301644.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
system zarządzania utrzymaniem ruchu
system informatyczny
obsługa zapobiegawcza
koszty obsługi
maintenance management systems
information system
preventive maintenance
maintenance costs
Opis:
Przedstawiona praca ma na celu opis różnych systemów zarządzania utrzymaniem ruchu stosowanych w ostatnich latach przez czeskie przedsiębiorstwa ze szczególnym uwzględnieniem zakładów rolno-przemysłowych. W pracy główną uwagę skupiono na systemach zarządzania utrzymaniem ruchu wspieranych przez systemy informatyczne (IS) oraz na problemie ich wdrażania w przedsiębiorstwach. Użycie systemu informatycznego pomaga w tworzeniu różnych scenariuszy, przy czym nacisk kładzie się na zapotrzebowanie na instrumenty analityczne służące do integracji przetwarzanych danych w celu polepszenia wydajności systemu utrzymania ruchu oraz rozpoznawania jego słabych punktów. Podczas gdy użycie systemów informatycznych wspomagających zarządzanie utrzymaniem ruchu (ang. maintenance management information system, MMIS) jest powszechne w zakładach rolno-przemysłowych przemysłu wytwórczego, podstawowa produkcja rolna oraz obsługa maszyn rolniczych czekają jeszcze na ich wdrożenie. W artykule opisano także możliwe zastosowania MMIS w zakładach rolno-spożywczych oraz różnice w aplikacji i potencjalnym wykorzystaniu MMIS w przypadku prac w zakresie utrzymania ruchu maszyn i urządzeń rolniczych całkowicie lub częściowo zleconych firmom zewnętrznym.
The purpose of this paper is to describe different maintenance management systems being used by Czech companies with a view to the agro-industrial complex in recent years. The paper focuses on maintenance management systems supported by information system (IS) and their implementation in companies. The use of IS helps to create a variety of scenarios with an emphasis on the need for analytical instruments processing data integration in order to improve the efficiency of the maintenance system and identify its weaknesses. While the maintenance management information system (MMIS) is widespread within the agro-industrial scope in the manufacturing industry, in primary agricultural production and agricultural machinery servicing, it has yet to be utilized. The paper also describes some possible applications of MMIS in the sphere of the agro-industrial complex, the differences between their applications and the potential use of MMIS in the case of fully or partially outsourced agricultural equipment maintenance.
Źródło:
Eksploatacja i Niezawodność; 2012, 14, 3; 233-238
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problems of Modern Methods Implementation of Stock of Technological Machines Management
Autorzy:
Antosz, K.
Ciecińska, B.
Powiązania:
https://bibliotekanauki.pl/articles/971263.pdf
Data publikacji:
2009
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
stock maintenance
workstation organization
Opis:
Productive management of possessed infrastructure is one of the factors that determine competitiveness specific efficiency and production ability. In fact, the proper operating of devices in the enterprise is a very important element of system of machine operation management. Proper operating demands specific actions due to having certain production demands, priorities and supervision. Issues connected with traditional and modern stock of machine tools management were presented in this paper. Methods of technical infrastructure management of enterprise and their advantages and drawbacks were discussed too. Special importance is given to TPM - an innovative approach towards machine operation, the reduction of stoppages and elimination of sources of wastage. Key aspects of TPM implementation process which requires eg. systemic everyday work (5S), were presented. Beside technical and personal problems, the area of fulfilling the rules of safe work with machining devices was discussed. Stages of searching for incompatibilities, generating of necessary documents and establishing essential areas of technical condition of machines conditions were showed.
Źródło:
Journal of Machine Engineering; 2009, 9, 4; 49-60
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An optimal preventive maintenance policy of parallel-series systems
Autorzy:
Duarte, J. C.
Craveiro, J. T.
Trigo, T. P.
Powiązania:
https://bibliotekanauki.pl/articles/2069373.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
reliability
availability
maintenance optimization
Opis:
This paper presents an algorithm to solve the problem of maintenance management of a two state parallel-series system based on preventive maintenance over the different system components. It is assumed that all components of the system exhibit Weibull hazard function and constant repair rate and that preventive maintenance would bring the system to the as good as new condition. The algorithm calculates the interval of time between preventive maintenance tasks for each component, minimizing the costs, and in such a way that the total downtime, in a certain period of time, does not exceed a predetermined value. It is presented an industrial case study where the algorithm is applied.
Źródło:
Journal of Polish Safety and Reliability Association; 2013, 4, 1; 29--34
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przegląd technologii wykorzystywanych do realizacji usług typu e-maintenance
Overview of technology used for service e-maintenance typee
Autorzy:
Midor, K.
Zasadzień, M.
Szczęśniak, B.
Powiązania:
https://bibliotekanauki.pl/articles/322958.pdf
Data publikacji:
2012
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
e-maintenance
technologie
technology
Opis:
W artykule została opisana analiza istniejących koncepcji i rozwiązań usług typu e-maintenance wraz z przeglądem zastosowanych w nich technologii. Opracowanie obejmuje studium literaturowe w zakresie istniejących koncepcji i rozwiązań z zakresu e-maintenance, opisanych w literaturze fachowej, a także rozwiązania i możliwości zastosowania tej koncepcji
This paper describes an analysis of existing concepts and solutions services such as e-maintenance together with an overview of technology used in them. The development includes the study of literature in the context of the existing concepts and solutions in the field of e-maintenance described in the literature, and describes the solutions and possible applications of this concept
Źródło:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2012, z. 63a; 301-311
1641-3466
Pojawia się w:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computer aided maintenance management of electronic equipment used in transport
Autorzy:
Siergiejczyk, M.
Rosiński, A.
Powiązania:
https://bibliotekanauki.pl/articles/359677.pdf
Data publikacji:
2013
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
maintenance
reliability
routine inspections
Opis:
Electronic equipment used in transport operates under various conditions. Due to characteristic nature of their application, they should be highly reliable. This paper presents a methodology of optimising a bistable operation process of those systems factoring in economic factors, i.e. the funding allocated to routine inspections. Its practical application was also discussed, which would entail computer aided maintenance software.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 33 (105); 100-105
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improvement of Vehicles Maintenance Management Process Performance Through the Implementation of Controlling
Autorzy:
Tubis, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/503988.pdf
Data publikacji:
2015
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
controlling
reporting
vehicle maintenance
Opis:
The article raises an important issue concerning the reporting systems which are used in transport companies. Research conducted by the author focused on the reporting system which functions in maintenance service station of one of the largest road transport operators in Poland. The goal of this article is to analyse the current reporting system in force in the audited company and to develop a model solution, supporting the management of vehicles maintenance performance. Prepared model should incorporate the concept of controlling.
Źródło:
Logistics and Transport; 2015, 27, 3; 51-58
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Use of Predictive Maintenance in the Production Processes
Wykorzystanie predictive maitenance w procesie produkcyjnym
Autorzy:
Napieraj, Aneta
Powiązania:
https://bibliotekanauki.pl/articles/319355.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
predykcja
predykcyjne utrzymanie ruchu
prewencyjne utrzymanie ruchu
prediction
predictive maintenance
preventive maintenance
Opis:
Failures are a problem for every company that causes the plant to stop working and thus incur losses. It is therefore obvious that companies want to eliminate unplanned downtime in the production process. In the wake of the still increasing demands in terms of productivity and safety requirements, cost reduction, the industry is forced to seek the optimum between economic requirements and an acceptable level of risk in terms of security. Modern factories equipped with computerized processes and extensive diagnostic tools often do not use all the information that is collected from the hardware level. It happens that some of the relationships between events are often overlooked or neglected. The article presents an approach to increasing machine reliability through predictive data analysis. The assumptions of the predictive and preventive maintenance methods are presented. The threats and possibilities offered by this methodology implemented in the production process are presented.
Awarie to problem każdego przedsiębiorstwa powodujący zatrzymanie pracy zakładu a przez to ponoszenie strat. Oczywistym zatem jest, że firmy chcą eliminować nieprzewidziane przestoje w procesie produkcji. W następstwie rosnących wciąż wymagań w zakresie produktywności i wymagań bezpieczeństwa, redukcji kosztów, przemysł zmuszony jest do poszukiwania optimum pomiędzy wymaganiami ekonomicznymi i akceptowalnym poziomem ryzyka w zakresie bezpieczeństwa. Nowoczesne fabryki wyposażone w skomputeryzowane procesy i rozbudowane narzędzia diagnostyczne często nie wykorzystują wszystkich informacji, które są zbierane z poziomu sprzętowego. Zdarza się, że niektóre z relacji pomiędzy zdarzeniami są często pomijane lub zaniedbywane. W artykule przedstawiono podejście do zwiększenia niezawodności maszyn poprzez predykcyjną analizę danych. Zaprezentowano założenia metodyki predictive i preventive maintenance. Przedstawiono zagrożenia i możliwości jakie daje ta metodyka zaimplementowana w procesie produkcyjnym.
Źródło:
Inżynieria Mineralna; 2019, 21, 1; 335-340
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Use of Predictive Maintenance in the Production Processes
Wykorzystanie predictive maitenance w procesie produkcyjnym
Autorzy:
Napieraj, Aneta
Powiązania:
https://bibliotekanauki.pl/articles/319337.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
predykcja
predykcyjne utrzymanie ruchu
prewencyjne utrzymanie ruchu
prediction
predictive maintenance
preventive maintenance
Opis:
Failures are a problem for every company that causes the plant to stop working and thus incur losses. It is therefore obvious that companies want to eliminate unplanned downtime in the production process. In the wake of the still increasing demands in terms of productivity and safety requirements, cost reduction, the industry is forced to seek the optimum between economic requirements and an acceptable level of risk in terms of security. Modern factories equipped with computerized processes and extensive diagnostic tools often do not use all the information that is collected from the hardware level. It happens that some of the relationships between events are often overlooked or neglected. The article presents an approach to increasing machine reliability through predictive data analysis. The assumptions of the predictive and preventive maintenance methods are presented. The threats and possibilities offered by this methodology implemented in the production process are presented.
Awarie to problem każdego przedsiębiorstwa powodujący zatrzymanie pracy zakładu a przez to ponoszenie strat. Oczywistym zatem jest, że firmy chcą eliminować nieprzewidziane przestoje w procesie produkcji. W następstwie rosnących wciąż wymagań w zakresie produktywności i wymagań bezpieczeństwa, redukcji kosztów, przemysł zmuszony jest do poszukiwania optimum pomiędzy wymaganiami ekonomicznymi i akceptowalnym poziomem ryzyka w zakresie bezpieczeństwa. Nowoczesne fabryki wyposażone w skomputeryzowane procesy i rozbudowane narzędzia diagnostyczne często nie wykorzystują wszystkich informacji, które są zbierane z poziomu sprzętowego. Zdarza się, że niektóre z relacji pomiędzy zdarzeniami są często pomijane lub zaniedbywane. W artykule przedstawiono podejście do zwiększenia niezawodności maszyn poprzez predykcyjną analizę danych. Zaprezentowano założenia metodyki predictive i preventive maintenance. Przedstawiono zagrożenia i możliwości jakie daje ta metodyka zaimplementowana w procesie produkcyjnym.
Źródło:
Inżynieria Mineralna; 2019, 21, 1/2; 265-270
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness assessment of diesel locomotives operation with the use of mobile maintenance points
Autorzy:
Szkoda, Maciej
Satora, Magdalena
Konieczek, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/949849.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
railway vehicles
maintenance strategy
mobile maintenance points
pojazdy kolejowe
konserwacja
mobilny punkt serwisowy
Opis:
Based on the example of 6Dg type diesel locomotives, the paper presents a new maintenance strategy concerning periodical checks at the P1 maintenance level. Currently, such locomotives are sent off to service points every 102 hours of operation or every 14 days for a P1 level check. Studies demonstrate that the average distance to be covered by a locomotive to arrive at a service point is in excess of 60.0 km, and the quantity of fuel consumed is more than 88 litres. It is costly and time consuming to have locomotives out of service and considerable resources of the railway carrier are engaged which could be made use of in the transport process. The aim of the newly developed strategy of P1 checks is to eliminate the need for locomotives to exit their routes to reach rolling stock maintenance points. The control/diagnostic and maintenance activities specified in the Maintenance System Documentation will be performed by socalled mobile maintenance points. The development of the new strategy required: identification of the current condition of the maintenance system, development of the concept of a new strategy of P1 maintenance checks, conduct of studies and operational analyses for SM42 series locomotives, performance of a durability, reliability analysis, assessment of safety together with an analysis of the risks involved in the proposed changes. In order to review and assess the efficiency of the new strategy, an observed operation of selected locomotives was conducted together with a railway carrier. During the study, the maintenance activities and processes were monitored and the costs of P1 checks were recorded. The analysis of efficiency of the new strategy of performing P1 checks without the need for a locomotive to exit its route to reach a rolling stock maintenance point demonstrated that depending on the distance covered by the locomotive to reach a maintenance point, the unit costs of a P1 level check are lower by up to 67.1% compared with the currently applied method.
Źródło:
Archives of Transport; 2020, 54, 2; 7-19
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A risk assessment method of aircraft structure damage maintenance interval considering fatigue crack growth and detection rate
Autorzy:
Zhang, Zhuzhu
Mao, Haitao
Liu, Yulin
Jiao, Peng
Hu, Wenlin
Shen, Pei
Powiązania:
https://bibliotekanauki.pl/articles/24200796.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
Monte Carlo
risk assessment
maintenance interval
crack propagation
detection rate
condition based maintenance
Opis:
The accurate assessment of aircraft structure damage risk is the premise of establishing reasonable, economic and reliable maintenance intervals. While many studies have proposed damage risk assessment methods for aircraft structures, these methods lack the quantification of risk. This paper proposed a risk assessment method of aircraft structure damage maintenance interval considering fatigue crack growth rate and crack detection rate. The damage process of aircraft structure was simulated by Monte Carlo simulation to realize the quantitative assessment of aircraft structure damage risk and maintenance interval. Taking an aircraft fleet as an example, the damage risk of its wing structure was simulated and analyzed. The results show that if the risk is controlled within a reasonable range, the maintenance interval should be shortened to 16 flight hours. At the same time, through the analysis of the risk classification standard and the crack detection rate, the quantitative evaluation of the risk classification standard was realized.
Źródło:
Eksploatacja i Niezawodność; 2023, 25, 1; art. no. 3
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A novel approach to optimize the maintenance strategies: a case in the hydroelectric power plant
Autorzy:
Özcan, Evrencan
Yumuşak, Rabia
Eren, Tamer
Powiązania:
https://bibliotekanauki.pl/articles/1841740.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
maintenance management
maintenance strategy optimization
multi-criteria decision making
AHP
COPRAS
integer programming
Opis:
Countries need to develop sustainable energy policies based on the principles of environmental sensitivity, reliability, efficiency, economy and uninterrupted service and to maintain their energy supply in order to increase their global competitiveness. In addition to this impact of sustainable energy supply on the global world, maintenance processes in power plants require high costs due to allocated time, materials and labor, and generation loss. Thus, the maintenance needs to be managed within a system. This makes analytical and feasible maintenance planning a necessity in power plants. In this context, this study focuses on maintenance strategy optimization which is the first phase of maintenance planning for one of the large-scale hydroelectric power plants with a direct effect on Turkey's energy supply security with its one fifth share in total generation. In this study, a new model is proposed for the maintenance strategy optimization problem considering the multi-objective and multicriteria structure of hydroelectric power plants with hundreds of complex equipment and the direct effect of these equipment on uninterrupted and cost-effective electricity generation. In the model, two multi-criteria decision-making methods, AHP and COPRAS methods, are integrated with integer programming method and optimal maintenance strategies are obtained for 571 equipment.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 2; 324-337
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An analysis of work of maintenance department employees
Autorzy:
Zasadzień, M.
Kwaśna, E.
Powiązania:
https://bibliotekanauki.pl/articles/359054.pdf
Data publikacji:
2012
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
work time
maintenance
5WHY
Opis:
The article presents the results of research into the time of work of maintenance department employees in a selected production plant. The measurements have been taken for three selected employees during 9 working days. Major activities performed by the employees have been identified and classified in three basic groups: the effective time devoted to daily duties connected with technical means maintenance, the auxiliary time which involves preparatory and administrative works as well as the ineffective time during which the employees undertook activities not related to the performed work. Among the ineffective and auxiliary activities the longest lasting ones have been specified. By means of the 5Why Method the causes responsible for the occurrence of major ineffective and auxiliary activities have been identified. As a result of the conducted analysis, corrective measures aimed at shortening the time of these activities have been identified, which should contribute to the improvement of maintenance department employees’ work effectiveness.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 32 (104) z. 1; 131-135
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maintenance in a Passenger Transportation Company in Poland and in the Republic of South Africa
Autorzy:
Tubis, Agnieszka
Nowakowska, Marta
Powiązania:
https://bibliotekanauki.pl/articles/503768.pdf
Data publikacji:
2018
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
urban transport
maintenance
human factor
Opis:
The maintenance of devices is now a critical element in the functioning of manufacturing enterprises. The situation is similar in the transport industry. The technical condition of the vehicles is dependent upon operational procedures that affect the quality of services, comfort and the amount of incurred operating expenses. The aim of this paper is to compare the standards in vehicle service companies which deal with passenger transport in Poland and South Africa. In this study particular attention is paid to the influence of the human factor (passenger expectations, cultural conditions, required standards) in the implementation of this service. The authors based their research on available literature, newspaper articles, direct observation, surveys among Wroclaw’s inhabitants, and interviews with the residents of Johannesburg and the management staff of transport companies.
Źródło:
Logistics and Transport; 2018, 37, 1; 103-112
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimisation of aircraft maintenances in the polish armed forces
Autorzy:
Kowalski, M.
Waślicki, P.
Żak, J. M.
Powiązania:
https://bibliotekanauki.pl/articles/246572.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
aircraft
maintenance system
optimisation task
Opis:
Maintaining the aircrafts (AC) of the Polish Armed Forces in operating condition is determined by adequate resources to secure maintenance and repairs possessed by the companies implementing these tasks on them. The article characterises and then describes formally the Aircrafts Maintenance System in the Polish Armed Forces. The assumptions of the aircraft maintenance system model, proposed model structure, and mapping of aircraft maintenance performance were described. The most important elements (such as data, decision variables, boundary conditions and assessment criterion function) of an optimisation task aimed at minimising the executed aircraft maintenances’ costs were formulated. For this purpose, the record of evaluation criterion functions of the companies performing aircraft maintenance was shown. The article was completed with a conclusion, which underlined the importance of the proposed optimisation model. The optimisation model proposed in the article allows evaluating the aircraft maintenances’ organisation and their parameters. The formal record concerns both in the case of one-dimensional maintenance (one aircraft type) and multi-dimensional one (various aircraft types).
Źródło:
Journal of KONES; 2016, 23, 4; 225-235
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rola informacji w budowaniu przewagi konkurencyjnej przedsiębiorstw na rynku kapitałowym
The Role of Information in the Process of Build Competitive Superiority Company on the Capital Market
Autorzy:
Kościelniak, Helena
Łęgowik-Małolepsza, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/906375.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
information
information management
maintenance processes
Opis:
Strong competitors, high production costs and low demand for goods need from contractors to change management methods. Managers implement innovation management processes in a range of them the most important role plays information management. The right using information has influence on efficiency and quality company management. The aim of this article is to present the role of information in the process of build competitive superiority company on the capital market by the make the maintenance processes more useful. In the article the chose theoretical aspects of the knowledge about information where shown as well as information management in maintenance processes. In the last part of the article the result of the researches concerning influence of cost information on maintenance processes management were presented.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2012, 267
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Keeping mining machinery in operation based on energy factors
Autorzy:
Korbiel, Tomasz
Czerwiński, Stefan
Powiązania:
https://bibliotekanauki.pl/articles/27324328.pdf
Data publikacji:
2022
Wydawca:
Instytut Techniki Górniczej KOMAG
Tematy:
maintenance
technical diagnostics
energy indicators
Opis:
Mining machinery maintenance strategy based on the current dynamic condition of the equipment not only improves reliability, reduces repair and renovation costs, but also affects electricity costs. Due to the use of modern monitoring and diagnostic systems, as well as advanced control and supervision methods, it is possible to improve the efficiency of devices and thus reduce energy costs. Due to the high power of the devices, even a slight decrease in efficiency translates into significant financial resources. Taking into account the prices of electricity as well as ecological aspects, investments in modern solutions give specific financial and social savings.
Źródło:
Mining Machines; 2022, 40, 3; 123--128
2719-3306
Pojawia się w:
Mining Machines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vibration analysis of rotating machines for an optimal preventive maintenance
Autorzy:
Taleb, M.
Chaib, R.
Powiązania:
https://bibliotekanauki.pl/articles/89011.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
surveillance
cement
vibration
conditional maintenance
Opis:
Face to the development and competition to competitiveness, which drives the search for quality and above ail; cost reduction, maintenance has become one of the strategic functions in the company. One of the solutions incorporated in management systems is Conditional maintenance that has proved successful; Reduce downtime, optimize manufacturing, ensure safety and profitability of production. For this type of maintenance to be effective, precise and reliable measurements are required. Experience has shown that vibration analysis is the most widely used technique for reliable monitoring and diagnosis. The objective of this work is the study carried out at the Elma Labiod cement plant, which has adopted continuous monitoring in the hope of an optimal approach to conditional maintenance. We use the analysis of global velocity and acceleration levels, spectral analysis and envelope analysis to detect defects and anticipate degradations that can affect a mechanism and determine the probable causes of these malfunctions. In this context, the actual measurements were analyzed by vibratory indicator leading to detection of the weak points causing a malfunction on the machine (rolling bearings), therefor an optimization of the maintenance is realized by monitoring the degradation through on-line control system. The analysis of these vibrations let the possibility to detect and locale the defective components once the fixed corresponding threshold limit of vibration level has been reached.
Źródło:
Mining Science; 2016, 23; 191-202
2300-9586
2353-5423
Pojawia się w:
Mining Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie oprogramowania ERP z zakresu „plant maintenance” na przykładzie SAP PM jako narzędzia dla służb utrzymania ruchu obiektu offshore
ERP software for "plant maintenance" on the example of SAP PM as a tool for offshore facility maintenance
Autorzy:
Magulski, Paweł
Dzionk, Stefan
Powiązania:
https://bibliotekanauki.pl/articles/2031397.pdf
Data publikacji:
2021
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
ERP
utrzymanie ruchu
offshore
maintenance
Opis:
W artykule poruszono kwestię planowania zasobów przedsiębiorstwa z wykorzystaniem oprogramowania ERP. Efektywne planowanie zarządzania całością zasobów przedsiębiorstwa polega głównie na: - zapewnieniu wysokiej jakości produktów, - maksymalizacji ekonomicznego okresu użytkowania parku maszynowego, - maksymalizacji zdolności produkcyjnych, - minimalizacji kosztów utrzymania sprzętu w sprawności operacyjnej, - zapewnieniu bezpiecznych warunków pracy parku maszynowego. Powyższe zadania mogą być obsługiwane przez oprogramowanie takie jak moduł SAP PM. W tym celu program powinien być odpowiednio dostosowany do potrzeb obiektów offshore. Należy opracować strukturę drzewa obiektów, określić ich krytyczność na podstawie matrycy kryteriów. Matryca ta powinna uwzględniać czynniki związane z bezpieczeństwem, znaczeniem obiektu dla platformy, awaryjnością oraz skomplikowaniem potencjalnego remontu. Ponadto należy opracować plany przeglądów / konserwacji, aby zmaksymalizować dostępność sprzętu i zminimalizować awarie.
The article discusses the issue of enterprise resource planning with the use of ERP software. Effective planning of managing the entire enterprise resources consists mainly in: - ensuring high-quality products, - maximizing the economic period of use of the machine park, - maximizing production capacity, - minimization of equipment maintenance costs in operational efficiency, - ensuring safe working conditions of the machine park. The above tasks can be handled by software such as SAP PM module. For this purpose, the program should be properly adapted to the needs of offshore facilities. A tree structure of objects should be developed, their criticality should be determined on the basis of the matrix of criteria. This matrix should take into account factors related to safety, the importance of the object for the platform, failure rate and complexity of the potential renovation. In addition, inspection / maintenance plans should be developed to maximize equipment availability and minimize breakdowns.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2021, 73; 31-33
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maintenance strategy by controlled consumption of operational potential
Autorzy:
Pająk, M.
Woropay, M.
Powiązania:
https://bibliotekanauki.pl/articles/245408.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
exploitation
maintenance management
operational potential
Opis:
The main groups of processes executed during exploitation phase of a machine are service and operating processes. The main objective of the operating processes is a generation of machine's operation effects. While an objective of the service processes is a reconstruction of object's exploitation properties, which are necessary to proper machine operation. In the case of complex, crucial exploitation systems the service and operating processes can't beperformed in the same time. Then, it is necessary to implement adeąuate strategy of exploitation processes execution. According to carried out studies it was stated that the service and operating processes could be expressed as functions of an operational potential amount included in an exploitation system. It was also stated that execution of the exploitation processes according to the optimal maintenance strategy guaranties minimisation of an operational potential amount untransformed to effects of the exploitation system operation. In the case of the analysed class of complex, crucial, strategic exploitation systems the start moment of the service processes is defined a several months in advance. In this paper, the maintenance strategy by controlled consumption of operational potential is presented. The strategy is formulated as an optimal method of exploitation processes execution. It is especially useful in the case of complex systems where it should be make a most of the operational potential.
Źródło:
Journal of KONES; 2009, 16, 4; 367-374
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Developing innovation through data collection and analysis
Autorzy:
Monteiro Tavares, C. M.
Szpytko, J.
Powiązania:
https://bibliotekanauki.pl/articles/244606.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
vehicle maintenance
digitalization
data analyses
Opis:
This paper is part of the study, for the creation of maintenance engineering culture and a system capable to control the input and output of vehicles operation and maintenance in developing countries. The focus of this paper will be the use of digital technologies to change business models, basing on the analyses of the data collected to develop innovation in transport system by creation of a system that works according to the local needs. This work has, as case of study, the transport system in Cape Verde (Praia city); a bus company, operating in the city for more than 40 years, will provide the data for analyses. The study of the exploitation efficiency of the transport system will focus in the analyses of the data collected, after the definition of the data for collection, is defined how the data will be analysed and used in order to create the desired solution. In this paper is also defined the platform used for data collection. The definition and selection of the vehicle systems/components for data collection has been supported by engineers and mechanics with long experience and knowledge of the local situation as well as vehicles operation and maintenance. The information that, if collected and analysed correctly, can help transform the vehicle operation and maintenance, data collection can empower us to direct resources toward the modules that are in most pressing need of technical refinement. With this knowledge base, we will be able to use predictive analysis to identify what, how and where to improve the services and manage the vehicle maintenance and operation.
Źródło:
Journal of KONES; 2017, 24, 2; 153-158
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Asymptotics of the total down time for an alternating renewal process
Autorzy:
Dziubdziela, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/748178.pdf
Data publikacji:
1983
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Applications
Reliability, availability, maintenance, inspection
Opis:
Praca jest poświęcona badaniu asymptotycznego zachowania się sumarycznego czasu awarii systemu, gdy jego proces awarii jest pewnym alternujęcym procesem odnowy, przy założeniu, że prawdopodobieństwo awarii w jednym cyklu jest zbieżne do zera. Wykorzystując twierdzenie R. Serfozo [6] znaleziono warunki konieczne i dostateczne dla zbieżności sumarycznego czasu awarii do złożonego procesu Poissona. Udowodnione wyniki wykorzystano do analizy trzech przykładów: pary elementów, ulegającej wykrywalnym i niewykrywalnym awariom (modele Murphy'ego i Phillipsa), pary elementów z zimną rezerwą obsługiwanych przez jednego konserwatora i elementu z rezerwą czasową
We investigate the asymptotic behavior of total down time of a system in which the breakdown process is an alternating renewal process, under the assumption that the probability of breakdown in a single cycle converges to zero. Using a theorem of R. Serfozo [J. Appl. Probab. 17 (1980), no. 2, 423–431; MR0568952], we find necessary and sufficient conditions for the convergence of the total down time to a compound Poisson process. We use these results in analyzing three examples: pairs of elements subject to detectable and undetectable breakdown (the Murphy and Phillips models), pairs of elements with a cold reserve served by one server; and an element with a temporal reserve.
Źródło:
Mathematica Applicanda; 1983, 11, 23
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maintenance chemotherapy with pemetrexed in patients with malignant pleural mesothelioma – case series and review of the literature
Autorzy:
Kardas, Joanna
Buraczewska, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/1064851.pdf
Data publikacji:
2016
Wydawca:
Medical Education
Tematy:
maintenance therapy
pemetrexed
pleural mesothelioma
Opis:
Malignant pleural mesothelioma is a rare neoplasm with poor prognosis. Surgical complete resection, which is the only radical therapy available, is only possible in a minority of patients who suffer from a locally advanced disease. Radiotherapy can be considered as an adjuvant therapy after surgery or as supportive treatment in palliative care. Attempts are also made at combining it with chemotherapy. In cases of locally advanced, non-resectable or metastatic disease, chemotherapy remains the treatment of choice. The most effective palliative chemotherapy is the pemetrexed plus cisplatin regimen. We describe 3 cases of patients who underwent standard palliative chemotherapy with pemetrexed and cisplatin, manifesting good radiological and clinical response, followed by maintenance therapy with pemetrexed. The use of pemetrexed maintenance therapy helped achieve many years of disease control with acceptable toxicity. The consecutive stages of therapy were continuously discussed with our patients, and their informed consent was obtained. Pemetrexed maintenance therapy is not a standard procedure, but recent findings suggest it may be an efficacious option to consider in selected groups of patients. Further randomized prospective studies are needed, but a limiting factor is the rarity of the disease.
Źródło:
OncoReview; 2016, 6, 3; A128-133
2450-6125
Pojawia się w:
OncoReview
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Możliwość zrzeczenia się alimentów przez uprawnionego
The ability to renounce maintenance rights by an obligee
Autorzy:
Tomaszewska, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/2196838.pdf
Data publikacji:
2021
Wydawca:
Kancelaria Sejmu. Biuro Analiz Sejmowych
Tematy:
maintenance
Family and Guardianship Code
Opis:
The obligation to provide maintenance is created ex lege, regardless of parties’ will. Both the maintenance obligation and the corresponding right to maintenance are strictly personal and inalienable. However, it is possible to conclude a contract between the obligee and the obligor concerning the maintenance obligation.
Źródło:
Zeszyty Prawnicze BAS; 2021, 3(71); 239-246
1896-9852
2082-064X
Pojawia się w:
Zeszyty Prawnicze BAS
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Predictive management in the context of industry 4.0
Autorzy:
Krynke, Marek
Powiązania:
https://bibliotekanauki.pl/articles/34670889.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
operation
maintenance management
predictive maintenance
Industry 4.0
eksploatacja
zarządzanie utrzymaniem ruchu
konserwacja predykcyjna
Opis:
The article presents information on the potential of Industry 4.0 in the field of maintenance. This work explores the potential and trends of predictive maintenance management in an industrial big data environment. The development of predictive maintenance, its technical challenges and in the context of Industry 4.0 was presented. In addition, a case study that illustrates how maintenance management and predictive maintenance can be applied to the maintenance of wind turbines is discussed.
Źródło:
Quality Production Improvement - QPI; 2021, 3, 1; 41-52
2657-8603
Pojawia się w:
Quality Production Improvement - QPI
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mission reliability–centered maintenance approach based on quality stochastic flow network for multistate manufacturing systems
Autorzy:
Yang, Xiuzhen
He, Yihai
Zhou, Di
Zheng, Xin
Powiązania:
https://bibliotekanauki.pl/articles/2172030.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
manufacturing system
reliability centered maintenance
RCM
mission reliability
maintenance quality
quality stochastic flow network
Opis:
Previous studies of reliability centered maintenance (RCM) rarely consider the maintenance quality for the operation condition monitoring of manufacturing system. Therefore, a quality-oriented maintenance approach for the multistate manufacturing system with the aid of mission reliability is proposed. First, connotations of the mission reliability and maintenance quality of the multistate manufacturing system are expounded on the basis of the operational mechanism. Second, a quality stochastic flow network (QSFN) model of the multistate manufacturing system is established, and a novel mission reliability model is presented. Third, a quality-oriented mission reliability–centered maintenance framework for multistate manufacturing systems is proposed, and the optimal integrated maintenance strategy is obtained by minimizing the total cost. Finally, an industrial example of subway flow receiver is presented to verify the proposed method. Results show that the proposed method can simultaneously balance the maintenance cost and maintenance quality of the multistate manufacturing system.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 3; 455--467
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza poziomu wdrożenia kompleksowego utrzymania ruchu (TPM) na przykładzie firmy z przemysłu elektrotechnicznego
Analysis of the level of total productive maintenance (TPM) on example of electrotechnical industry
Autorzy:
Świtek, S.
Powiązania:
https://bibliotekanauki.pl/articles/202611.pdf
Data publikacji:
2017
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
kompleksowe utrzymanie ruchu
autonomiczne utrzymanie ruchu
prewencyjne utrzymanie ruchu
sześć sigma
szczupłe wytwarzanie
Total Productive Maintenance
autonomous maintenance
preventive maintenance
six sigma
lean manufacturing
Opis:
W pracy przedstawiono wyniki wdrożenia koncepcji Kompleksowego Utrzymania Ruchu (TPM) w jednym z zakładów produkcyjnych na terenie Polski, będącym filią międzynarodowej korporacji działającej w branży elektrotechnicznej. Celem badania było potwierdzenie korzyści uzyskiwanych z programu TPM, jednakże na poziomie całego zakładu. Było to zadanie złożone dla tego studium przypadku z uwagi na różnorodność i ilość wyposażenia produkcyjnego. Zebrane dane na przestrzeni ostatnich kilku lat poddano analizie, a jej wynik potwierdza nie tylko słuszność postawionej tezy o skuteczności koncepcji TPM do obniżenia poziomu awarii, ale również daje rekomendacje dla dalszego rozwoju koncepcji w tej firmie i wskazówki dla zarządu. W artykule podkreślono również efekt współdziałania koncepcji TPM z innymi programami ciągłego doskonalenia.
This paper presents a substantial results of the concept of Total Productive Maintenance in one of production sites in Poland, which is a subsidiary of an international corporation operating in the electronic industry. The aim of the study was to confirm the common benefits derived from the TPM program, but at the level of the whole plant, which was a complex task for this case study because of the variety and quantity of production equipment utilized. The data collected over the last few years were analyzed, and the result confirms not only the validity of the bet thesis about the effectiveness of TPM to reduce the level of breakdowns but also gives recommendations for the further development of the improvement initiative in this company and guidance to the board. The article also highlights the effect of interaction between TPM and other programs of continuous improvement.
Źródło:
Zeszyty Naukowe Politechniki Poznańskiej. Organizacja i Zarządzanie; 2017, 73; 273-287
0239-9415
Pojawia się w:
Zeszyty Naukowe Politechniki Poznańskiej. Organizacja i Zarządzanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Porownanie warunkow utrzymania koni w stajni stanowiskowej i boksowej
The comparison of horses conditions management in a standing and a box stall stable
Autorzy:
Bombik, T
Gorski, K.
Bombik, E.
Malec, B.
Powiązania:
https://bibliotekanauki.pl/articles/44695.pdf
Data publikacji:
2009
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
konie
utrzymanie zwierzat
systemy utrzymania zwierzat
utrzymanie boksowe
utrzymanie stanowiskowe
stajnie
warunki utrzymania zwierzat
mikroklimat
animal maintenance
maintenance condition
maintenance system
horse
stable
microclimate
Źródło:
Acta Scientiarum Polonorum. Zootechnica; 2009, 08, 1-2; 3-10
1644-0714
Pojawia się w:
Acta Scientiarum Polonorum. Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Routine maintenance as a main determinant of technical efficiency of a military vehicle resulting from the drivers duties
Obsługiwanie bieżące jako główny determinant sprawności technicznej pojazdu wojskowego wynikający z obowiązków kierowcy
Autorzy:
Woźniak, Dariusz
Ciekot, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/30145368.pdf
Data publikacji:
2020
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
military equipment
technical maintenance
routine maintenance
driver
sprzęt wojskowy
SpW
obsługiwanie techniczne
obsługiwanie bieżące
kierowca
Opis:
The article presents selected aspects related to the primary type of technical maintenance of military vehicles, namely the routine maintenance. Its organizational principles have been discussed based on the applicable military industry regulations. Moreover, the basic driver’s duties have been characterized.
W artykule przedstawiono wybrane aspekty związane z podstawowym rodzajem obsługiwania technicznego pojazdów wojskowych, jakim jest obsługiwanie bieżące. Omówiono jego zasady organizacyjne w oparciu o obowiązujące wojskowe przepisy branżowe, ponadto scharakteryzowano podstawowe czynności kierowcy.
Źródło:
Scientific Journal of the Military University of Land Forces; 2020, 52, 1(195); 154-170
2544-7122
2545-0719
Pojawia się w:
Scientific Journal of the Military University of Land Forces
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electric motors maintenance planning from its operating variables
Planowanie utrzymania ruchu silników elektrycznych i ich zmiennych operacyjnych
Autorzy:
Rodrigues, F.
Fonseca, I.
Farinha, J. T.
Ferreira, L.
Galar, D.
Powiązania:
https://bibliotekanauki.pl/articles/409876.pdf
Data publikacji:
2017
Wydawca:
STE GROUP
Tematy:
maintenance
planned maintenance
electric machines
HMI/SCADA
utrzymanie ruchu
planowane utrzymanie ruchu
maszyny/urządzenia elektryczne
Opis:
The maintenance planning corresponds to an approach that seeks to maximize the availability of equipment and, consequently, increase the levels of competitiveness of companies by increasing production times. This paper presents a maintenance planning based on operating variables (number of hours worked, duty cycles, number of revolutions) to maximizing the availability of operation of electrical motors. The reading of the operating variables and its sampling is done based on predetermined sampling cycles and subsequently is made the data analysis through time series algorithms aiming to launch work orders before reaching the variables limit values. This approach is supported by tools and technologies such as logical applications that enable a graphical user interface for access to relevant information about their Physical Asset HMI (Human Machine Interface), including the control and supervision by acquisition through SCADA (Supervisory Control And data acquisition) data, also including the communication protocols among different logical applications.
Planowanie utrzymania ruchu odpowiada podejściu, które ma na celu maksymalizację dostępności wyposażenia, a w konsekwencji zwiększenie poziomu konkurencyjności przedsiębiorstw przez zwiększenie czasów produkcji. W artykule przedstawiono planowanie utrzymania ruchu w oparciu o zmienne operacyjne (liczba przepracowanych godzin, cykle robocze, liczba obrotów) w celu maksymalizacji dostępności pracy silników elektrycznych. Odczytywanie zmiennych operacyjnych i pobieranie próbek odbywa się na podstawie ustalonych z góry cykli próbkowania, następnie dokonuje się analizy danych za pomocą algorytmów szeregowania czasowego mających na celu uruchomienie zleceń roboczych przed osiągnięciem zmiennych wartości dopuszczalnych. Podejście to jest wspierane przez narzędzia i technologie, takie jak aplikacje logiczne, które umożliwiają wykorzystanie graficznego interfejsu użytkownika w celu uzyskania dostępu do istotnych informacji o ich zasobach fizycznych HMI (Human Machine Interface), w tym kontroli i nadzoru przez pozyskanie z wykorzystaniem SCADA (Supervisory Control And Data Acquisition) danych, w tym również protokołów komunikacyjnych pomiędzy różnymi aplikacjami logicznymi.
Źródło:
Management Systems in Production Engineering; 2017, 3 (25); 205-216
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uwagi o modelowaniu procesów eksploatacyjnych z wykorzystaniem technik scenariuszowych
Remarks about modelling of maintenance processes with the use of scenario techniques
Autorzy:
Loska, A.
Powiązania:
https://bibliotekanauki.pl/articles/1366288.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
eksploatacja
utrzymanie ruchu
scenariusze eksploatacyjne
procesy eksploatacyjne
modelowanie
exploitation
maintenance
maintenance scenarios
exploitation processes
modelling
Opis:
Celem artykułu jest zaprezentowanie wyników przeprowadzonych badań w zakresie sposobów wykorzystania metod modelowania procesów eksploatacyjnych w zastosowaniach praktycznych (przemysłowych). W pierwszej kolejności dokonano identyfikacji i klasyfikacji stosowanych w tym zakresie rozwiązań, zwrócono przy tym uwagę na problemy związane z modelowaniem procesów w aspekcie szerszego ujęcia organizacyjno-technicznego. W oparciu o przeprowadzone badania, które miały charakter zarówno podstawowy (teoretyczny), jak i przemysłowy, sformułowano problem badawczy. Jego istota sprowadza się do trudności wykorzystania modeli procesów eksploatacji w odniesieniu do funkcjonujących organizacji utrzymania ruchu przedsiębiorstw przemysłowych ze względu na ich "płaski" charakter. W oparciu o sformułowany problem badawczy zaproponowano sposób jego rozwiązania poprzez zastosowanie do modelowania procesów eksploatacji technik scenariuszowych. Następnie po dokonaniu przeglądu stanu wiedzy (literatury) w aspekcie budowy scenariuszy eksploatacyjnych, opracowano i przedstawiono szczegółowo procedurę prowadzenia badań, których efektem będzie opracowanie metodologii tworzenia scenariuszy eksploatacyjnych, z uwzględnieniem sposobu praktycznego ich wykorzystania. Artykuł jest wynikiem realizacji części badań w ramach projektu badawczego, finansowanego ze środków Narodowego Centrum Nauki nr 5636/B/T02/2011/40 pt.: Wykorzystanie metod scenariuszowych w modelowaniu procesów eksploatacyjnych
This article aims at presenting the results of research use of modelling of exploitation processes in practical applications (industrial). Firstly, there has been made an identification and of solutions in this area, particular attention was paid equally to the problems associated with processes modelling in the context of wider organizational and technical approach. Basing on the performed studies, of both basic (theoretical) and industrial character, the research problem has been defined. It concentrates on the difficulties of using exploitation process models in relation to the maintenance organization in an industrial enterprise, because of their "flat" nature. Based on the developed research problem, there has been proposed a way of its solution by applying scenario techniques. Secondly, following a review of the state of knowledge (literature) in the context of exploitation scenario building, there has been prepared and presented a detailed research procedure, that will result in the development of methodology for creation of exploitation scenarios, including the way of their use in practice. The article is funded by National Science Centre in Poland under the project no. 5636/B/T02/2011/40 titled: "The use of scenario methods in exploitation processes modelling".
Źródło:
Eksploatacja i Niezawodność; 2012, 14, 2; 92-98
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effective time interval for railway track geometry inspection
Autorzy:
Kasraei, Ahmad
Zakeri, Jabbar Ali
Powiązania:
https://bibliotekanauki.pl/articles/223850.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
track geometry
inspection interval
maintenance
degradation
maintenance cost
geometria toru
przeglądy
konserwacja
degradacja
koszty utrzymania
Opis:
A proper decision-making scheme for track geometry maintenance requires a knowledge of the real condition of track geometry. Therefore, the track must be inspected by measurement cars at different time intervals. The frequency of track geometry inspection plays a crucial role in decision-making and has always been a big concern for infrastructure managers. The inspection interval should be chosen properly, it means that the small period can decrease the capacity of line and affect the operation of network and the big period can result in low quality of track and in some cases derailments and possible loss of human lives. The aim of this paper is to determine the effective inspection interval such that the total maintenance cost is minimized. In the proposed cost model, the costs of inspection, preventive maintenance, corrective maintenance and the penalty for exceeding the corrective maintenance level are considered. A case study is performed on a real dataset collected from a railway line in Iran. The standard deviation of longitudinal level is considered to measure track geometry degradation. A widely applied linear model is used to model track geometry degradation over time. Monte Carlo technique is used to simulate the track geometry behavior under various track geometry inspection intervals. In addition, a set of sensitivity analyses are carried out to assess the effect of various inspection intervals on different terms of maintenance cost. The results indicate that not only can substantial costs be saved by setting effective inspection intervals, but also the time during which the track suffers from bad conditions is dramatically reduced. The result of this study has shown the appropriate inspection interval for the studied case can result in 13.6 percent decrease in maintenance cost in comparison with the current maintenance policy. Besides, it would lead to more reliable railway track by preventing the system exceed the corrective threshold.
Źródło:
Archives of Transport; 2020, 53, 1; 53-65
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of RCM theory in air operations
Autorzy:
Bugaj, M.
Powiązania:
https://bibliotekanauki.pl/articles/393850.pdf
Data publikacji:
2011
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
konserwacja
awarie
niezawodność
maintenance
reliability
failure
Opis:
Reliability-Centred Maintenance (RCM) implementation provides measures that signify progress towards implementing an RCM based maintenance program. Using numbers identified during the Analysis Phase as a basis, the metrics concentrate on the number and percentage of each category (new task, modified task, cancellation of specified old program tasks, design modifications, operational procedure changes, etc., that have actually been implemented. Implementation will (or should) usually begin during the Analysis Phase of an RCM project, and may provide information for improvement of the analysis. Implementation involves many activities, such as: Identification of resources (money, time, manpower), Coordination with governing authorities or other parties affected, Procedure writing, walk down and approval, Procurement of special tools, parts and consumables needed to carry out the procedures mandated under the new program, Training or at least orientation on the new procedures for those who are to perform them, Planning and scheduling of new RCM based procedures, Actual execution the first time on the asset that was subject of the RCM Project.
Źródło:
Archives of Transport System Telematics; 2011, 4, 1; 13-17
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of usefulness of operational potential consumption models to control complex technical systems maintenance
Autorzy:
Pająk, M.
Powiązania:
https://bibliotekanauki.pl/articles/246382.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
exploitation
maintenance management
operational potential
modelling
Opis:
The carried on studies consider a crucial complex exploitation system of strategic importance from the national economy point of view. In case ofsuch class of systems, operation and service processes should be executed according to maintenance strategy named maintenance strategy by controlled consumption of operational potential. Thanks to it, optimal amount of operational potential included in the system can be transformed into the effect of the system operation. To execute exploitation processes according to the mentioned above strategy a model of operational potential consumption process should be implemented. The model estimates amount of operational potential consumed during exploitation processes execution. During carried out studies, models used to manage exploitation systems maintenance were identified. In the paper, identified models are divided into groups of analytical, stochastic and system ones. Next, usefulness of each group of models to control processes of exploitation phase of crucial complex strategic exploitation systems was discussed. As a result it was stated that it is necessary to create the universal system model, which can project influence of forcing factors on a s tate of technical object being a part of considered class of technical systems. In the paper, a structure of created universal system model was also proposed. This model was created by implementation the artificial intelligence techniques in form of genetic algorithms and fuzzy logic. Fuzzy logic was used to model approximate character of model input data and genetic algorithms were used to optimize a value of model output data.
Źródło:
Journal of KONES; 2010, 17, 2; 387-393
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected aspects of the maintenance system optimisation of the Polish Armed Forces helicopters
Autorzy:
Kowalski, M.
Waślicki, P.
Żak, J.
Powiązania:
https://bibliotekanauki.pl/articles/241597.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
helicopters
maintenance system
optimization of system
Opis:
The maintenance of helicopters at the airports of the Polish Armed Forces in the state of technical efficiency determines the possession – by the entity securing their maintenance, repair – of appropriate resources and the maintenance system. The article presents the current state of the operation processes of helicopters in the Polish Army. The characteristics of the helicopter maintenance system model and the basic assumptions were described, and the mathematical records of input data to the system were identified and presented. The selected elements of the optimisation task, its decision variables, and constraints were formulated. The initial assessment of the quality of the proposed solution of the helicopter maintenance system model. The essence of the system optimisation problem, which relates to minimising the cost function and maximising the system’s readiness function, was emphasised. In addition, an example of appropriateness of applying such an approach is presented on the basis of the School Aviation Base. The article was concluded with a short summary, which stressed the importance of this type of the optimisation system.
Źródło:
Journal of KONES; 2018, 25, 3; 289-297
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Operational strategy of military motor vehicles
Autorzy:
Niziński, S.
Kupicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/244538.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
motor vehicles
control
operation
diagnostics
maintenance
Opis:
The paper presents an outline of a new strategy to improve operational system of military motor vehicles. Technical diagnostics method is a tool for controlling the motor vehicles maintenance in the state of their functional and professional operability. Three criteria have been assumed to control and maintain vehicles in the state of their technical operability, effectiveness and safety. It was found that the safety of military vehicles is controllable by board-external diagnostic systems as well as diagnostic systems as part of their operating systems. An algorithm is presented for diagnosing, maintaining, and assessing vehicles security in combat. It was found necessary to develop an improved technology for vehicles maintenance, including technological processes, organization of the processes implementation progress and their infrastructure. The organizational chart has been presented of the motor vehicles technological diagnostics and maintenance process. The paper also includes the concept for assessment of the vehicles operational effectiveness based on criteria of the static and dynamic coefficient of technical readiness and costs.
Źródło:
Journal of KONES; 2011, 18, 1; 395-402
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Agricultural machines maintenance and repair services in Western Pomerania
Autorzy:
Bujaczek, R.
Sławiński, K.
Grieger, A.
Powiązania:
https://bibliotekanauki.pl/articles/298110.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
agriculture machine
maintenance
repair
West Pomeranian
Opis:
The research, determining the potential of network of maintenance workshops for agricultural machinery. A survey was conducted in 30 maintenance workshops in Western Pomerania in 2009. The study period covered the years 2007–2008, when 8,476 repairs were made. The analysed workshops have experienced staff with appropriate qualifications. 63.4% are employees with formal experience between 11 and 20 years. Employees with experience below 10 years amount 34% of staff. The demand for repair services is generated by the implementation of field work. During this period, the potential of staff and maintenance positions is fully used, while during off-season there is a significant surplus of service supply over demand. Annually, this surplus is 530% in the area of maintenance services for agricultural machinery. The effective use of the potential of the repair shops employees in the surveyed period was 30.5%.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2013, 16(1); 13-18
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maintenance of Lead-acid Batteries Used in Telecommunications Systems
Autorzy:
Kobus, R.
Kliś, P.
Godlewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/307755.pdf
Data publikacji:
2015
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
battery capacity measurements
maintenance
telecommunications systems
Opis:
The article presents numerous problems with standby batteries used in telecommunications systems, with a particular emphasis placed on the assessment of their real capacity. The methods used to evaluate the technical condition of batteries and to measure their real capacity are presented. Also, the a new test device which measures the actual battery capacity is presented. The said measurement is based on the discharge test method and is performed with the use of a new TBA-A automated test unit. The article is targeted for electronic designers, managers and telecommunications hardware maintenance personnel, as well as for other telecommunications systems experts.
Źródło:
Journal of Telecommunications and Information Technology; 2015, 4; 106-113
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability analysis of forest machines due to FMEA method
Autorzy:
Ťavoda, P.
Kováč, J.
Łukaszczyk, Z. Ł.
Powiązania:
https://bibliotekanauki.pl/articles/409738.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
reliability
FMEA method
forest machines
maintenance
Opis:
The article deals with the research of operational reliability of forest felling machines with the method FMEA (Failure Mode and Effect Analysis) and its implementation for observed machines in the organization. Forwarders 810D by John Deere were chosen for this research. The research was realized in real operational conditions. Application of the FMEA method allows flexibility in case of unexpected situations and optimization of human potential abilities. FMEA tool is a tool preventing outages operational reliability and preventive tool for ensuring the maintenance of facilities. This paper explores and verifies the operational reliability theory in practical real-world conditions, resulting in a reduction in operating (variable) costs, minimization of failures and readiness and increased performance of observed machines.
Źródło:
Management Systems in Production Engineering; 2018, 4 (26); 200-206
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A data driven decision making approach for long-wall mining production enhancement
Autorzy:
Morshedlou, A.
Dehghani, H.
Hoseinie, S. H.
Powiązania:
https://bibliotekanauki.pl/articles/88911.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
longwall system
reliability
maintenance
production risk
Opis:
Machine failures have destructive effects on continuity of operation and lead to production losses in long-wall mines, making proper maintenance scheduling essential. This paper models the reliability of the whole production chain in an Iranian long-wall mine including the drum shearer, Armored Face Conveyor (AFC), hydraulic powered supports, Beam Stage Loader (BSL), and main conveyer belt. Analyzing the computational results and failure frequencies, we rank the critical components and develop a reliability-based preventive maintenance schedule for all equipment. In respect to the data classification, conveyor belt with failure abundance of 41.5 percent is the most critical, while powered supports with the failure abundance of 1.2 percent shows the best performance. Approximately, the reliability of the production process after four hours reaches nearly to zero. Implementing the schedule, computational results suggest an increase of approximately 67.7 percent in the average production per shift.
Źródło:
Mining Science; 2019, 26; 7-20
2300-9586
2353-5423
Pojawia się w:
Mining Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Steam turbine maintenance planning based on forecasting of life consumption processes and risk analysis
Autorzy:
Rusin, Andrzej
Tomala, Martyna
Powiązania:
https://bibliotekanauki.pl/articles/2172025.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
steam turbine
risk analysis
preventive maintenance
Opis:
Flexible operation of coal-fired power plants contributes to the intensification of the life consumption processes, which is a serious problem especially in the case of units with a long in-service time. In steam turbine rotors, the crack propagation rate and material wear caused by low-cycle fatigue increase. The aim of the research is an attempt to forecast the development of these processes and to estimate the probability of critical elements damage, such as the high-pressure and intermediate-pressure rotors. In the stress state analyses, the finite element method (FEM) is used, the Monte Carlo method and the second order reliability method (SORM) is apply to calculate the probability of failure. It is proposed to use risk analysis to plan preventive maintenance of the turbine. The optimal intervals for carrying out diagnostic tests and prophylactic repairs is determined for various operating scenarios and various failure scenarios. This enables a reduction of the costs while ensuring the safety of the turbine's operation.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 3; 395--406
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of road transportation infrastructure construction and maintenance for sustainable development in South-Western Nigeria
Autorzy:
Adepoju, Olusegun Onifade
Powiązania:
https://bibliotekanauki.pl/articles/2141124.pdf
Data publikacji:
2021
Wydawca:
Fundacja Centrum Badań Socjologicznych
Tematy:
road transport
infrastructure
construction
maintenance
Nigeria
Opis:
The approaches to managing our road transportation infrastructure are not sustainable. A sustainable road transport infrastructure must meet the needs of present road users and give allowance to accommodate future developments. There is a gap between expected life span of roads in Nigeria and actual life span after putting the infrastructure into use. This paper examined the reasons government cannot repair roads in Nigeria, identify the challenges faced by the construction companies while on road construction projects and the effects of bad roads on national sustainable development. Ministry of Works and Transport, Ibadan and ad hoc staff of two major construction companies Reynolds Construction Company (RCC) and China Civil Engineering Construction Corporation (CCECC) were purposively selected based on the number of roads they have constructed in South-western Nigeria. Principal Component Analysis was used to identify the various factors that are responsible for the inability of government to construct and repair roads. Descriptive analysis was used to explain the challenges of construction companies and also the effects of bad road on national development. The findings identified 20 factors that are responsible for the inability of government to construct and maintain roads which were reduced into eight components. Some challenges in road construction are erosion, inadequate skilled labour, capital for equipment, funding, user’s problem and machinery repairs. The effects of bad roads include: road crashes (27%), high vehicle maintenance cost (21%), capital flight (17%), passengers’ discomfort (14%), high transportation cost (11%) and drivers’ fatigue (10%). The study concluded that, there should be standardized procedure for road construction projects in the form of: penalty for failure to meet the required deadline, quality, usage and rehabilitation in order to achieve sustainable development
Źródło:
Journal of Sustainable Development of Transport and Logistics; 2021, 6, 1; 49-58
2520-2979
Pojawia się w:
Journal of Sustainable Development of Transport and Logistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the reliability of systems
Autorzy:
Kordecki, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/748521.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Reliability, availability, maintenance, inspection
Communication theory
Opis:
W pracy przedstawiono metody szacowania niezawodności systemów. Główną uwagę zwrócono na metody wykorzystujące znajomość struktury kombinatorycznej systemów, szczególnie tych, które mają zastosowania w sieciach komputerowych. Przedstawiono znane, klasyczne metody szacowania - przez systemy równoległo-szeregowe, wykorzystujące metodę włączania-wyłączania oraz ich współczesne modyfikacje. Omówiono nowe metody rozwijane przez Koutrasa oraz metody oparte na wynikach z teorii zbiorów ekstremalnych: twierdzeniu Spernera i twierdzeniu Kruskala- Katony. Na zakończenie przedstawiono pewne wyniki dotyczące systemów wielostanowych, obliczenia i oszacowania ich niezawodności.
The article contains no abstract
Źródło:
Mathematica Applicanda; 2002, 30, 44/03
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Life cycle costing used for justifying transition to predictive maintenance strategies
Autorzy:
Mikler, J.
Powiązania:
https://bibliotekanauki.pl/articles/99511.pdf
Data publikacji:
2011
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
reliability
life cycle costing
predictive maintenance
Opis:
As the market imposes constantly increasing levels of reliability and availability of production equipment, it is necessary to shift the focus of maintenance toward predictive strategies. However, as any other investment, implementation of the required condition monitoring systems has to be cost justified. This paper presents a case study showing use of LCC calculations to assess changes of maintenance strategy for a CNC machining centre. It was proven that replacing reactive maintenance tasks with simple condition monitoring and preventive activities results in lower whole life cycle cost of the analysed machining centre.
Źródło:
Journal of Machine Engineering; 2011, 11, 4; 49-58
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detection of wear parameters using existing sensors in the machines environment to reach higher machine precision
Autorzy:
Schmitt, R. R.
Decressin, R.
Dietrich, F.
Dröder, K.
Powiązania:
https://bibliotekanauki.pl/articles/99855.pdf
Data publikacji:
2018
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
predictive maintenance
analysis
precision
predictive model
Opis:
This paper presents methods to plan predictive maintenance for precision assembly tasks. One of the key aspects of this approach is handling the abnormalities during the development phase, i.e. before and during process implementation. The goal is to identify abnormalities which are prone to failure and finding methods to monitor them. To achieve this, an example assembly system is presented. A Failure Mode and Effects Analysis is then applied to this assembly system to show which key elements influence the overall product quality. Methods to monitor these elements are presented. A unique aspect of this approach is exploring additional routines which can be incorporated in the process to identify machine specific problems. As explained within the paper, the Failure Mode and Effects Analysis shows that the resulting quality in a case study from a precision assembly task is dependent on the precision of the rotational axis. Although the rotational axis plays a significant role in the resulting error, it is hard to explicitly find a correlation between its degradation and produced parts. To overcome this, an additional routine is added to the production process, which directly collects information about the rotational axis. In addition to the overall concept, this routine is discussed and its ability to monitor the rotational axis is confirmed in the paper.
Źródło:
Journal of Machine Engineering; 2018, 18, 2; 85-96
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Periodichnost v sisteme tekhnicheskogo obsluzhivanija kormouborochnykh kombajjnov
Frequency system maintenance forage harvesting combine
Autorzy:
Dubrovin, V.
Krasovski, E.
Derzhan, K.
Rogovskijj, I.
Powiązania:
https://bibliotekanauki.pl/articles/77203.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
combine
harvesting
maintenance
service system
variable
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2014, 16, 3
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability evaluation as a means of increasing the efficiency of equipment maintenance
Autorzy:
Stuchlý, V.
Poprocký, R.
Kaczmarek, M.
Powiązania:
https://bibliotekanauki.pl/articles/957947.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
reliability model
centred maintenance
cost
consequences
Opis:
Quality assurance of production and the associated maintenance systems have changed a lot for recent decades and are subject to change requirements for reliability – Reliability and Availability of machinery and equipment subject to the optimal maintenance costs. The paper deals with design options and assessment of the maintenance system intended method of reliability-oriented maintenance and maintenance costs. They use the methods of statistical and probabilistic analyzes of data on failure mode of operation, as well as methods priori reliability. The emphasis is on cost-effectiveness evaluation.
Źródło:
Advances in Science and Technology. Research Journal; 2016, 10, 32; 40-46
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wdrażanie "procesu utrzymania urządzeń" w przedsiębiorstwie wodociągowym na przykładzie Saur Neptun Gdańsk SA
Implementing the Maintenance Process in The Waterworks of Gdańsk
Autorzy:
Maksymiuk, Z.
Osiński, A.
Jurec, R.
Powiązania:
https://bibliotekanauki.pl/articles/236368.pdf
Data publikacji:
2003
Wydawca:
Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Tematy:
wodociągi
utrzymanie urządzeń
waterworks
maintenance process
Opis:
Zmiany gospodarcze wymuszają konieczność ciągłego i systematycznego dostosowywania przedsiębiorstw wodociągowych do nowych warunków techniczno-ekonomicznych. Istotnym elementem wymuszającym poszukiwanie nowych rozwiązań jest znaczny (w Gdańsku ponad 50%) spadek produkcji wody od 1992 r. Znacznym ułatwieniem dla zarządów przedsiębiorstw wodociągowych mogą być pojawiające się nowe narzędzia, wskaźniki i kryteria do porównywania działalności firm wodociągowych nie tylko pod względem technicznym i technologicznym, ale też coraz częściej pod względem ekonomicznym (benchmarking). W pracy omówiono założenia i uwarunkowania wdrażania "procesu utrzymania urządzeń" w latach 2002-2005. Nowe narzędzie pozwoli na zwiększenie możliwości analizowania informacji o realizowanych pracach i ich kosztach, a także ułatwi podejmowanie optymalnych decyzji. Obszar pilotażowy wdrożenia objął swym zasięgiem urządzenia automatyki i telemetrii, energetyki oraz urządzenia do dawkowania chemikaliów (ok. 20% urządzeń będących w eksploatacji). Celem końcowym tego procesu będzie szczegółowa kontrola budżetu przedsiębiorstwa i optymalizacja prac związanych z utrzymaniem jego urządzeń, poprzez określenie niezbędnych budżetów operacyjnych oraz ocenę ryzyka stanu wyposażenia.
The continuing changes in Poland's economy and rapid developments in world's technology have become a serious challenge also for water-supply companies, which heave to cope with a variety of new technological and economic issues, and look for adequate solutions. The Waterworks of Gdańsk, for example, have been suffering a considerable drop in water consumption (which has decreased by 50%) since 1992. This considerable decrease in water demand has revealed the adverse effects of the oversized technological systems and insufficient funds for repairs and overhauls in the past. These days, the managers of water supply system may find considerable support owing to the availability of some new tools (parameters, indexes, criteria), which make it possible to compare the performance of water-supply companies not only in technological but also in economic terms (benchmarking). As these tools were developed for the needs of industrial companies, they have to be modified before they are used by water-supply companies. Recently Saur Neptun Gdańsk SA (a Bouygues member) has been audited by the French consulting company Celleron, and the growing role of analyses and reports in the management of the company has created the need of implementing an integrated E&T computer system. Considerable progress has already been achieved in the implementation of this system for the Departments of Operations and Technology, which enabled the decision to be made on the implementation of the Maintenance Saur Neptun Gdańsk in the time span of 2002 to 2005. In the present paper, the assumptions and conditions for the implementation of the Maintenance Process are discussed. The Maintenance Process is a convenient tool providing information not only about the operations being currently performed, but also about the costs involved, which facilitates optimal decision-making. The implementation has been started on a pilot scale, which includes devices made use of in automatic engineering, power engineering and telemetry, as well as the equipment used for dosing chemicals. The final objective of The Process is a detailed control of the budget and the required operating budgets and by assessing the risk of device failure.
Źródło:
Ochrona Środowiska; 2003, R. 25, nr 3, 3; 13-16
1230-6169
Pojawia się w:
Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uwarunkowania eksploatacyjne związane z utrzymaniem szyn
Operating conditions related to rail maintenance
Autorzy:
Stencel, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/248338.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:
operation
szyny
utrzymanie
eksploatacja
rails
maintenance
Opis:
W artykule poruszono problematykę utrzymania szyn. Przedstawiono czynniki związane głównie z eksploatacją szyn, które mają wpływ na sposób utrzymania. Opisano również podstawowe problemy, jakie występują obecnie w utrzymaniu szyn.
This paper addresses the issue of rail maintenance. Factors related mainly to the rails operation that have an impact on the manner of maintenance are presented. Basic problems that currently occur in rail maintenance are also described.
Źródło:
Zeszyty Naukowo-Techniczne Stowarzyszenia Inżynierów i Techników Komunikacji w Krakowie. Seria: Materiały Konferencyjne; 2019, 2(119); 229-233
1231-9171
Pojawia się w:
Zeszyty Naukowo-Techniczne Stowarzyszenia Inżynierów i Techników Komunikacji w Krakowie. Seria: Materiały Konferencyjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maintenance system of semi-trailer and risk priority number
Autorzy:
Gallikova, Jana
Barta, Dalibor
Caban, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/263110.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
maintenance
FMEA
risk priority number
reliability
Opis:
The new maintenance system of semi-trailer combination as a most used road freight transport means is the subject of interest in this article. The real experiences from practice and creation of the FMEA analysis of the system using software support are the basis of wear and damage analysis of air brake system components used on the semi-trailer combination. The desire to improve market position of the company, customer satisfaction, but also the product specifications, government regulatory requirements, agency recommendations, and legal implications are the grounds for continuous improvement of the product quality, reliability and safety. These reasons push the product manufacturers to perform risk analyses, which helps them identify and minimize system failures during the life cycle of product. One of the risk analysis techniques recommended by international standards to identify possible failure causes is the FMEA methodology. It helps to locate the failures and reduce their consequences, so that the intended function of the machine is fulfilled. In this paper was presented the wear and damage analysis of individual components of air brake system and creating of the FMECA analysis for semi-trailer combination. Base on them, new methods to detect failures of components of air systems, preventive measures and set up of a new planned preventive maintenance system for air brakes was designed. The cost of the proposed maintenance system is 2.2 times higher than the cost of the current maintenance system, but it minimizes the failures and their consequences (traffic accidents).
Źródło:
Archiwum Motoryzacji; 2019, 86, 4; 101-109
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of specific factors on the state of the tire pressure value
Autorzy:
Caban, Jacek
Turski, Andrzej
Nieoczym, Aleksander
Tarkowski, Sławomir
Jereb, Borut
Powiązania:
https://bibliotekanauki.pl/articles/263179.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
road safety
tire
vehicle safety
maintenance
Opis:
The article presents the research on the impact of specific factors on the state of the pressure value in passenger car wheels in service. Data on how the vehicle was used was obtained based on a survey. The survey contained data on checking the condition of the vehicle tires and also measured the tire pressure. The aim of the study was to investigate the relationship between the impact of specific factors on the state of the pressure value in passenger car wheels. The correlation analysis of the correctness of pressure in car tires and selected factors was carried out using the Kendall tau test. In addition, odds ratio (OR) analysis and the Hosmer and Lemeshow test were used to analyze the results. The work draws attention to the impact of improper tire pressure on tire durability and road safety as well as the functioning of other active safety systems. In addition, attention was drawn to drivers' awareness of the need to control the pressure in the wheels of the vehicle. Based on the analysis it was found that the age of the vehicle used and the driver's knowledge have the greatest impact on the correct tire pressure. Studies have shown that in over 60% of the vehicles analyzed, the tire pressure was normal.
Źródło:
Archiwum Motoryzacji; 2019, 85, 3; 137-148
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Damage rate as a reliability characteristics having significant influence on the operational quality of the technical object 375TS being operated and maintained in the transport systems
Autorzy:
Muślewski, Ł.
Wdzięczny, A.
Powiązania:
https://bibliotekanauki.pl/articles/244883.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport system
reliability
efficiency
maintenance
failures
Opis:
This paper presents theoretical basis for evaluation of the transport system operation quality. A general evaluation model was built, and further part of the paper is to consider the theme of damageability of the means of transport, as a reliability feature, constituting one of the most important criterion to evaluate the transport system operation. Based on the analysed references in question as well as on the results of our own research it has been found that the damages to the means of transport, being utilised within the transport systems, are a result of interaction of various forcing factors. Some number of the damages results from natural wear of the means of transport elements, which is a natural phenomenon, while the remaining damages may be caused by an inefficient repair of the previous damage. This leads to so called secondary damages to the repaired element, occurred within a short time interval, which is a proof of inappropriate organization of the repairs, poor training level of the repairing teams, limits related to pre and after repair diagnosis, which directly affects reliability of the means of transport and consequently the operation quality of the transport systems in which they are being operated and maintained. Based on the analysis of the investigation results it has been found that the primary damages are independent on one another and they occur randomly. The secondary damages are dependent, because their occurrence depends on prior occurrence of the primary damage and the effect of its improper repair or improper repair of the next secondary damage.
Źródło:
Journal of KONES; 2008, 15, 4; 375-384
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved method of processing the output parameters of the diesel locomotive engine for more efficient maintenance
Autorzy:
Zvolenský, Peter
Barta, Dalibor
Grenčík, Juraj
Droździel, Pawel
Kašiar, Ľubomír
Powiązania:
https://bibliotekanauki.pl/articles/1841741.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
maintenance
locomotive
diesel engine
control parameters
Opis:
Modernization of aged rolling stock is one of the possibilities to adapt it to the current requirements for better environmental friendliness and economy of railway transport. However, some vehicle upgrades lead to new failures that were not observed in the original vehicles. The cause is the so-called “hybrid design”, built on a combination of original and selected new components. The aim of the work was to improve the situation with frequent failures and unavailability that occur on the modernized locomotive where a new diesel engine and new electronic control system was installed. Within the work, a simplified methodology for evaluating the outputs of diagnostic equipment was developped based on and applied to specific locomotive type and its diesel engine. The methodology resulted in a significant reduction of the time for assessing the condition of the vehicle’s diesel engine and more effective maintenance. The paper also presents other possibilities in the analysis of big data in the maintenance of rolling stock e.g. using fuzzy logic.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 2; 315-323
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Operational quality of a truck in experts assessment
Autorzy:
Dmowski, Artur
Ignaciuk, Piotr
Dębicka, Ewa
Niewczas, Andrzej
Glavic, Drazenko
Matijošius, Jonas
Powiązania:
https://bibliotekanauki.pl/articles/944942.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
operational quality
reliability
maintenance
expert assessment
Opis:
The article presents the results of expert assessment of the quality of three different branches of trucks in terms of their suitability for long-term rental. The expert assessment is faster and cheaper compared to the analogous evaluation obtained on the basis of operational tests, hence the purpose of this article is to assess the accuracy of the results obtained in expert studies. The reliability characteristics of vehicles, such as: readiness, probability of first failure and distribution of mileage between successive repairs, were used as parameters for empirical quality assessment. Operational tests covered three groups of 30 vehicles. As part of the research, changes in vehicle technical readiness occurring during operation were also assessed. The failures of individual functional systems of the vehicle were also analyzed and compared with the results of expert studies. The expert assessment was based on a questionnaire regarding the overall assessment of the reliability and performance of cars. 32 experts - appraisers, with good knowledge of the construction of cars of the tested brands participated in these studies. On the basis of comparisons of the results of the expert assessment with the results of empirical studies, conclusions were drawn regarding the correctness of the assessment made by experts.
Źródło:
Archiwum Motoryzacji; 2019, 83, 1; 87-101
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factor Analysis as a Means of Filtering Rams Indicators for Railway Vehicles
Autorzy:
Sitarz, Marek
Chruzik, Katarzyna
Graboń-Chałupczak, Marzena
Powiązania:
https://bibliotekanauki.pl/articles/503756.pdf
Data publikacji:
2017
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
Maintenance Management System RAMS
factor analysis
Opis:
European Commission Regulation (EU) No. 445/2011 regarding the system of certification for entities in charge of maintenance (ECM) of freight wagons requires such entities to supervise the condition of wagons, without specifying the methods of supervision to be used. Each ECM should establish a Maintenance Management System (MMS), which will include the obligation to monitor the fleet of freight wagons. Monitoring railway vehicle maintenance operations should include tracking all significant technical and operational indicators. The key question is which indicators are the have the greatest impact on safety. This paper discusses some issues related to the monitoring of maintenance operations for railway vehicles. It also looks at dedicated solutions for entities in charge of the maintenance for freight wagons based on PN-EN 50126:2002 standard and RAMS indicators (Reliability, Availability, Maintainability and Safety). This paper describes factor analysis of the proposed indicators as a means of selecting those that have a decisive impact on the correctness of the process for monitoring vehicles. This paper shows an example of the implementation of the requirements of the European Commission Regulation 445/2011 [3] regarding the monitoring of the state of railway vehicles and the possibility of using the information so gained as part of a process of continuous improvement. Reducing the number of indicators will reduce the amount of data needed to calculate all the RAMS indicators, without compromising the benefits of the rail vehicle monitoring system.
Źródło:
Logistics and Transport; 2017, 36, 4; 105-112
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Verification of the Modernized Technological Process Through TPM Indicators
Autorzy:
Michlowicz, Edward
Smolińska, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/503862.pdf
Data publikacji:
2018
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
Total Productive Maintenance
OEE
MTTR
MTBF
Opis:
Storage of zinc wastes is associated with a high risk of environmental pollution. The way to manage the problem is using the waste materials in the transition process, the final product of which is the zinc oxide concentrate. Transition process is technologically complex and every failure to the discipline results in a large number of unscheduled stops. Such an issue was encountered by B. Recycling. An update of environmental regulations has forced a comprehensive modernization of the technology lines used. The implementation of new solutions brought the necessity of examination and evaluation of the effectiveness of the process. In the paper the analysis conducted for this purpose are described. The elements of TPM method were selected as the test method. The OEE, MTBF and MTTR values for the individual process lines and additionally for the most problematic subassemblies were determined basing on the research and collected data.
Źródło:
Logistics and Transport; 2018, 37, 1; 61-68
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problemy konserwatorskie paramentów kościelnych
Autorzy:
Grodzicka, Wanda
Powiązania:
https://bibliotekanauki.pl/articles/1038326.pdf
Data publikacji:
1964
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:
konserwacja
kościół
zaganienia
issue
church
maintenance
Źródło:
Archiwa, Biblioteki i Muzea Kościelne; 1964, 8; 243-248
0518-3766
2545-3491
Pojawia się w:
Archiwa, Biblioteki i Muzea Kościelne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Operation and maintenance financial feasibility analysis of centralized domestic wastewater treatment system (case study: Palembang City Sewerage Project)
Autorzy:
Estu, Larap K.
Susanti, Betty
Hadinata, Febrian
Powiązania:
https://bibliotekanauki.pl/articles/35543174.pdf
Data publikacji:
2021
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
financial feasibility
wastewater
sewerage
operation
maintenance
Opis:
Budget needed for operation and maintenance of centralized domestic wastewater management in Indonesia is often overlooked. This results in fail systems, high idle capacity, and abandoned assets. While the economic feasibility often used as the basis for centralized domestic wastewater infrastructure construction, the financial feasibility often shown a different result. The construction phase will be feasible according the analysis, while the operation and maintenance phase will have a different result. As unsolicited projects, the operation and maintenance of sewerage in Indonesia always have budget difficulties, thus needed scenario to resolve the matter. In this study, cost and revenue variable will be analyzed to determine the feasibility value based on NPV, BCR, and IRR calculations. The revenue comes from user charge tariffs on household and commercials connections, and cost variable consists of: chemical usage cost; sludge disposal cost; personnel wage cost; fuel and electricity cost; spare-part replacement cost. The analysis will determine whether both household connection and commercials connection in the sewerage system have positive results. Should negative results emerged, follow up analysis added to elevate the results consists of following scenarios: sensitivity analysis for tariffs adjustment; sensitivity analysis adding grant as option; sensitivity analysis adding loan as option. While analysis of base tariffs shown negative results on NPV, BCR, and IRR calculation, the follow up analysis shown significant changes thus the results is desirable.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2021, 30, 3; 477-484
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-100 z 930

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